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Journal articles on the topic 'Speciation of arsenic'

Author: Grafiati

Published: 4 June 2025

Last updated: 1 August 2025

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1

Zeng, X., Q. He, L. Bai, L. Li, and S. Su. "The arsenic speciation transformation in artificially arsenic-contaminated fluvo-aquic soil (Beijing, China)." Plant, Soil and Environment 57, No. 3 (2011): 108–14. http://dx.doi.org/10.17221/198/2010-pse.

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Arsenic (As) speciation transformation often accompanies adsorption-desorption when exogenous arsenide is poured into soil. Disregarding the speciation transformation when evaluating adsorption-desorption of As can greatly influence the experimental results. In this study, batch experiments were conducted, and the results indicated that exogenous monomethylarsonic acid (MMA) or dimethylarsinic acid (DMA) added to fluvo-aquic soil collected from agricultural area in Beijing of China, was completely converted into As(V) after cultivated for<br />60 or 90 days. However, when exogenous As(V)

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2

Zhao, Shu Ting, Hua Chang Li, and Ye Hong Shi. "Speciation Analysis of Antimony and Arsenic in Soil and Remediation of Antimony and Arsenic in Contaminated Soils." Advanced Materials Research 1088 (February 2015): 578–82. http://dx.doi.org/10.4028/www.scientific.net/amr.1088.578.

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Antimony and arsenic are recognized to be toxic carcinogens. With the development of chemical industry, antimony and arsenic pollution problems are becoming more and more serious in soil. This paper described speciation analysis of antimony and arsenic in soil in the latest technical progress. Speciation analysis of arsenic and antimony which use joint techniques and non joint techniques are summarized. This paper also introduced various remediation technologies for antimony and arsenic contaminated soil. Finally, the trend for future technical development in remediation of antimony and arseni

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3

Falconer, Travis, and Kevin Kubachka. "Arsenic speciation challenge." Analytical and Bioanalytical Chemistry 414, no. 16 (2022): 4535–36. http://dx.doi.org/10.1007/s00216-022-04116-1.

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4

Gong, Z. "Arsenic speciation analysis." Talanta 58, no. 1 (2002): 77–96. http://dx.doi.org/10.1016/s0039-9140(02)00258-8.

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5

Matsumoto-Tanibuchi, Eri, Toshiaki Sugimoto, Toshiyuki Kawaguchi, Naoki Sakakibara, and Michiaki Yamashita. "Determination of Inorganic Arsenic in Seaweed and Seafood by LC-ICP-MS: Method Validation." Journal of AOAC INTERNATIONAL 102, no. 2 (2019): 612–18. http://dx.doi.org/10.5740/jaoacint.18-0148.

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Abstract Background: Seaweed and seafoodoften contain both inorganic and organic arsenic compounds showing distinct toxicities. Speciation must be taken into account when determining the concentrations of arsenic compounds and how they relate to overall toxicity. Objective: An analytical method for the quantitation of inorganicarsenic was validated in seaweed and seafood. Methods: Food samples were heated at 100°C in 0.3 mol/L nitric acid. Arsenic speciation was quantitatively determined by LC-inductively coupled plasma-MS (LC-ICP-MS) using an octadecilsilane (ODS) column with a mobile phase c

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Lobriayao, Bounphak. "Contamination of Arsenic Speciation in Rice." Souphanouvong University Journal Multidisciplinary Research and Development 10, no. 1 (2024): 10–17. http://dx.doi.org/10.69692/sujmrd100110.

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Rice is the staple food of people in Asian countries, especially in Laos, where it is carbohydrate stuff that plays an essential role as a source of energy to support human beings. Arsenic (As) is a heavy metal of which naturally occurring; it can be found in soil, rocks, and natural water sources; and is caused by human activities such as mining activities, the use of agro-chemicals (pesticides, herbicides, etc.) in agriculture. Therefore, it is possible to deposit and contaminate the environment such as the paddy soil and the irrigation; afterward, it can initiate the arsenic residues in the

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7

Yuan, Chungang, Xiufen Lu, Nicole Oro, et al. "Arsenic Speciation Analysis in Human Saliva." Clinical Chemistry 54, no. 1 (2008): 163–71. http://dx.doi.org/10.1373/clinchem.2007.092189.

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Abstract Background: Determination of arsenic species in saliva is potentially useful for biomonitoring of human exposure and studying arsenic metabolism. Arsenic speciation in saliva has not been reported previously. Methods: We separated arsenic species in saliva using liquid chromatography (LC) and quantified them by inductively coupled plasma mass spectrometry. We further confirmed the identities of arsenic species by LC coupled with electrospray ionization tandem mass spectrometry. These methods were successfully applied to the determination of arsenite (AsIII), arsenate (AsV), and their

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8

Vagliasindi, F. G. A., and Mark M. Benjamin. "Arsenic removal in fresh and nom-preloaded ion exchange packed bed adsorption reactors." Water Science and Technology 38, no. 6 (1998): 337–43. http://dx.doi.org/10.2166/wst.1998.0269.

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Arsenic speciation and removal in continuous-flow packed bed adsorption reactors was investigated using a strong base anion exchange resin as the adsorbent. Preloading of the media was investigated passing arsenic-free Lake Washington water through columns packed with the resin prior to feeding influent spiked with arsenic. NOM preloading did not affect the systems, but sulfate adsorbed during the preloading and the subsequent adsorption steps caused chromatographic displacement of the adsorbed arsenic. Significant arsenic speciation changes occurred in the arsenic-spiked feeding solution that

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9

Feldmann, Jörg, Vivian W.-M. Lai, William R. Cullen, Mingsheng Ma, Xiufen Lu, and X. Chris Le. "Sample Preparation and Storage Can Change Arsenic Speciation in Human Urine." Clinical Chemistry 45, no. 11 (1999): 1988–97. http://dx.doi.org/10.1093/clinchem/45.11.1988.

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Abstract Background: Stability of chemical speciation during sample handling and storage is a prerequisite to obtaining reliable results of trace element speciation analysis. There is no comprehensive information on the stability of common arsenic species, such as inorganic arsenite [As(III)], arsenate [As(V)], monomethylarsonic acid, dimethylarsinic acid, and arsenobetaine, in human urine. Methods: We compared the effects of the following storage conditions on the stability of these arsenic species: temperature (25, 4, and −20 °C), storage time (1, 2, 4, and 8 months), and the use of additive

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10

Le, X. Chris, Xiufen Lu, and Xing-Fang Li. "Peer Reviewed: Arsenic Speciation." Analytical Chemistry 76, no. 1 (2004): 26 A—33 A. http://dx.doi.org/10.1021/ac041492r.

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11

Lai, Vivian W. M., William R. Cullen, and Sankar Ray. "Arsenic speciation in scallops." Marine Chemistry 66, no. 1-2 (1999): 81–89. http://dx.doi.org/10.1016/s0304-4203(99)00025-0.

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12

Jankong, Patcharin, Cherif Chalhoub, Norbert Kienzl, Walter Goessler, Kevin A. Francesconi, and Pornsawan Visoottiviseth. "Arsenic accumulation and speciation in freshwater fish living in arsenic-contaminated waters." Environmental Chemistry 4, no. 1 (2007): 11. http://dx.doi.org/10.1071/en06084.

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Environmental context. Inorganic arsenic, a well-known human carcinogen, represents a major worldwide environmental problem because contaminated water supplies have lead to widespread human exposure. This study investigates the arsenic content of freshwater fish from arsenic-contaminated and non-contaminated sites in Thailand, and reports high arsenic concentrations and significant amounts of inorganic arsenic in the edible muscle tissue. The data suggest that freshwater fish may represent a significant source of inorganic arsenic to some human populations. Abstract. Striped snakehead (Channa

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13

Kuenstl, Linda, Simone Griesel, Andreas Prange, and Walter Goessler. "Arsenic speciation in bodily fluids of harbor seals (Phoca vitulina) and harbor porpoises (Phocoena phocoena)." Environmental Chemistry 6, no. 4 (2009): 319. http://dx.doi.org/10.1071/en08079.

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Environmental context. Marine mammals play an important role in their ecosystem. As top predators they ingest a lot of arsenic from their food. In the present study bodily fluids and tissue samples of harbor seals and porpoises were investigated for arsenic speciation in order to obtain a clearer picture on their feeding habits and consequently a better understanding of the mass mortality of the animals in the North and Baltic Sea. Abstract. The total arsenic concentrations and arsenic speciation in various tissues and bodily fluids of harbor seals (Phoca vitulina) and harbor porpoises (Phocoe

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14

VIÑAS, P., I. LÓPEZ-GARCÍA, B. MERINO-MEROÑO, N. CAMPILLO, and M. HERNÁNDEZ-CÓRDOBA. "Stability of Arsenobetaine Levels in Manufactured Baby Foods." Journal of Food Protection 66, no. 12 (2003): 2321–24. http://dx.doi.org/10.4315/0362-028x-66.12.2321.

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The stability of arsenobetaine in baby foods under different experimental conditions is evaluated. Total arsenic was analyzed by electrothermal atomic absorption spectrometry, and the speciation of arsenicals was carried out by coupling liquid chromatography to hydride generation–atomic absorption spectrometry. The highest arsenic levels in the analyzed baby foods corresponded to those containing plaice (2 to 3 μg/g). The speciation data indicated that arsenobetaine, a nontoxic species, was the only arsenical present in the baby foods analyzed at levels between 0.2 and 3 μg/g. Two different pr

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15

Ma, Xing Guan, and Meng Qi Wang. "Research on Influences of "A Test of Different Initial pH from the Reaction" with Properties of Environment Materials on Distribution of Arsenic Speciation Arsenic-Ferric Precipitation." Advanced Materials Research 1014 (July 2014): 307–10. http://dx.doi.org/10.4028/www.scientific.net/amr.1014.307.

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The distribution of arsenic speciation can be applied to elucidate the mechanism of removal arsenic during treatment the water containing arsenic with molysite. In this study, the effect of initial pH on the distribution of arsenic speciation in arsenic-ferric precipitation was determined by a five-step sequential extraction procedure. And then further explore the mechanism of arsenic removal with molysite. This experimental results showed that the main mechanisms governing the arsenic removal with ferric chloride were specific adsorption and coprecipitation. Besides, as pH increased from 5 to

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16

Pan, Xuan, Li-Zhu Liu, Zhen-Yuan Nie та Jin-Lan Xia. "δ-MnO2 Drives the Green Decomposition of Arsenopyrite by Mediating the Fate of Arsenic to Generate FeAsO4". Minerals 13, № 5 (2023): 657. http://dx.doi.org/10.3390/min13050657.

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Arsenopyrite (FeAsS) is a typical gold-bearing sulfide mineral. It usually encapsulates the gold particles and seriously inhibits the leaching of gold, so oxidation pretreatment of arsenopyrite is prerequired for the effective leaching of gold. However, the oxidation of arsenopyrite is accompanied by arsenic mobility, potentially resulting in serious environmental issues. An eco-friendly oxidant, δ-MnO2, was herein used to effectively oxidize arsenopyrite and control the fate of arsenic under acidic conditions. Via characterization of the variation of leaching parameters, morphology change, an

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17

Xiao, Yuancan, Cen Li, Wei Xu, et al. "Arsenic Content, Speciation, and Distribution in Wild Cordyceps sinensis." Evidence-Based Complementary and Alternative Medicine 2021 (February 19, 2021): 1–9. http://dx.doi.org/10.1155/2021/6651498.

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The excessive arsenic content in wild Cordyceps sinensis has caused great concerns on human health. The toxicity of arsenic depends on its concentration, chemical form, and valence. The source studies of arsenic in C. sinensis are essential for safety evolution and quality control. We used ICP-MS and HPLC-ICP-MS methods to determine the total arsenic amount and the arsenic speciation. Synchrotron-based XANES and micro-XRF imaging techniques were used to characterize arsenic valence and distribution. The total arsenic amount range in wild C. sinensis samples was 5.77–13.20 μg/g with an average

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18

Büchler, Pedro, Rosângela Abdala Hanna, Humayoun Akhtet, Frank K. Cartledge, and Marty E. Tittlebaum. "Solidification/stabilization of arsenic: Effects of arsenic speciation." Journal of Environmental Science and Health . Part A: Environmental Science and Engineering and Toxicology 31, no. 4 (1996): 747–54. http://dx.doi.org/10.1080/10934529609376385.

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19

Hasegawa, Hiroshi, Masakazu Matsui, Shinsuke Okamura, Masashi Hojo, Nozomu Iwasaki, and Yoshiki Sohrin. "Arsenic speciation including ‘hidden’ arsenic in natural waters." Applied Organometallic Chemistry 13, no. 2 (1999): 113–19. http://dx.doi.org/10.1002/(sici)1099-0739(199902)13:2<113::aid-aoc837>3.0.co;2-a.

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20

Huynh, Trang, Hugh H. Harris, Hao Zhang, and Barry N. Noller. "Measurement of labile arsenic speciation in water and soil using diffusive gradients in thin films (DGT) and X-ray absorption near edge spectroscopy (XANES)." Environmental Chemistry 12, no. 2 (2015): 102. http://dx.doi.org/10.1071/en14047.

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Environmental context Both inorganic and organic arsenic species are toxic to the environment when labile. The Diffusive Gradients in Thin Films technique, equipped with ferrihydrite binding gel enables measurement of labile arsenic species from water and soil solutions. This study indicated that labile arsenic species are quantitatively adsorbed to the gel, and that they are stable for up to 2 weeks following deployment. Abstract Arsenic speciation was determined in the solution extracted from a ferrihydrite binding gel layer in a DGT unit (FB-DGT) deployed in water using coupled high-perform

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21

Kim, Min-hyuk, Junseob Kim, Chang-Hyun Noh, Seogyeong Choi, Yong-Sung Joo, and Kwang-Won Lee. "Monitoring Arsenic Species Content in Seaweeds Produced off the Southern Coast of Korea and Its Risk Assessment." Environments 7, no. 9 (2020): 68. http://dx.doi.org/10.3390/environments7090068.

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Seaweed, a popular seafood in South Korea, has abundant dietary fiber and minerals. The toxicity of arsenic compounds is known to be related to their chemical speciation, and inorganic arsenic (iAs) is more detrimental than other species. Due to the different toxicities of the various chemical forms, speciation analysis is important for evaluating arsenic exposure. In this study, total arsenic (tAs) and six arsenic species (arsenite, arsenate, monomethylarsonic acid, dimethylarsinic acid, arsenobetaine, and arsenocholine) were analyzed in 180 seaweed samples. Although there were differences be

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22

Stanic, Aleksandar, Sasa Jovanic, Nikola Marjanovic, and Zvonimir Suturovic. "The use of L-ascorbic acid in speciation of arsenic compounds in drinking water." Acta Periodica Technologica, no. 40 (2009): 165–75. http://dx.doi.org/10.2298/apt0940165s.

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Arsenic speciation, besides total arsenic content determination, is very important in analysis of water, foodstuffs, and environmental samples, because of varying degrees of toxicity of different species. For such purpose hydride generation atomic absorption spectrometry can be used based on the generation of certain types of hydride, depending on the pH value and pretreatment in different reaction media. In this study, we have investigated the effect of L-ascorbic acid as the reaction medium as well as the pre-reducing agent in speciation of arsenic by hydride generation-atomic absorption spe

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23

Gwon, Yeseul, Seong Ryeol Kim, and Eun Jung Kim. "Effect of Soil Washing Using Oxalic Acid on Arsenic Speciation and Bioaccessibility in Soils." Journal of Korean Society of Environmental Engineers 42, no. 4 (2020): 218–27. http://dx.doi.org/10.4491/ksee.2020.42.4.218.

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Objectives : Soil washing process has been widely applied for remediation of contaminated soil with arsenic and heavy metals in Korea. The application of soil washing could change physical and chemical properties of soils and metal speciation in soil, which could affect the risk to the environment and human health. Thus, it is necessary to evaluate metal and arsenic speciation and their mobility in soil after soil remediation in order to evaluate effectiveness of soil remediation process and manage soil quality effectively. The purpose of this study is to evaluate the risk of arsenic in soil a

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24

Gu, Zi Qiang, Xu Qing Liu, Ke Xiang, Xuan Qin, and Ya Yun Li. "Speciation Analysis of Harmful Elements in the Scheelite Tailings." Advanced Materials Research 1065-1069 (December 2014): 3096–99. http://dx.doi.org/10.4028/www.scientific.net/amr.1065-1069.3096.

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The speciations of lead, zinc, arsenic from the skarn type scheelite flotation tailings of a Hubei Mining Co., Ltd were analysized on the ICP-AES spectroscopy, while the samples were prepared with the BCR three step extraction method proposed by the Standard Bureau of European Union and the improved BCR sequential extraction method proposed by Rauret.The results showed that: (1) The contents of arsenic, lead and zinc existing in Stable residual state, are 66.23%、41.44% and 36.34%, respectively, and the harmful elements in the tailings are basically stable under the normal environment condition

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25

Ma, Mingsheng, and X. Chris Le. "Effect of arsenosugar ingestion on urinary arsenic speciation." Clinical Chemistry 44, no. 3 (1998): 539–50. http://dx.doi.org/10.1093/clinchem/44.3.539.

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Abstract We developed and evaluated a method for the determination of μg/L concentrations of individual arsenic species in urine samples. We have mainly studied arsenite [As(III)], arsenate [As(V)], monomethylarsonic acid (MMAA), and dimethylarsinic acid (DMAA) because these are the most commonly used biomarkers of exposure by the general population to inorganic arsenic and because of concerns over these arsenic species on their toxicity and carcinogenicity. We have also detected five unidentified urinary arsenic species resulting from the metabolism of arsenosugars. We combined ion pair liqui

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Liu, C., CG Wright, KG McAdam, et al. "Arsenic Speciation in Tobacco and Cigarette Smoke." Beiträge zur Tabakforschung International/Contributions to Tobacco Research 25, no. 2 (2012): 375–80. http://dx.doi.org/10.2478/cttr-2013-0916.

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AbstractArsenic is one of the metals found in cured tobacco and mainstream cigarette smoke. Levels of arsenic in modern filtered cigarette smoke range from sub-ppm to a few tens of ppms. To enable accurate smoke toxicity assessment on arsenic in cigarette smoke, it is desirable to establish its chemical forms in addition to total quantities because different arsenic compounds possess different toxicological potentials.Progress has been made on measuring the arsenic speciation in tobacco and mainstream cigarette smoke by using a combination of synchrotron-based X-ray absorption spectroscopy and

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27

Foster, Simon, William Maher, Anne Taylor, Frank Krikowa, and Kristy Telford. "Distribution and Speciation of Arsenic in Temperate Marine Saltmarsh Ecosystems." Environmental Chemistry 2, no. 3 (2005): 177. http://dx.doi.org/10.1071/en05061.

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Environmental Context. The pathways by which arsenic is accumulated and transferred in aquatic ecosystems are relatively unknown. Examination of whole marine ecosystems rather than individual organisms provides greater insights into the biogeochemical cycling of arsenic. Saltmarshes with low ecological diversity are an important terrestrial–marine interface about which little is known regarding arsenic concentrations and species distribution. This study examines the cycling of arsenic within Australian saltmarsh ecosystems to further understand its distribution and trophic transfer. Abstract.

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28

Ali, Imran, and Chakresh Kumar Jain. "Advances in arsenic speciation techniques." International Journal of Environmental Analytical Chemistry 84, no. 12 (2004): 947–64. http://dx.doi.org/10.1080/03067310410001729637.

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29

Moriarty, Maeve M., Iris Koch, Robert A. Gordon, and Kenneth J. Reimer. "Arsenic Speciation of Terrestrial Invertebrates." Environmental Science & Technology 43, no. 13 (2009): 4818–23. http://dx.doi.org/10.1021/es900086r.

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30

Cullen, William R., and Kenneth J. Reimer. "Arsenic speciation in the environment." Chemical Reviews 89, no. 4 (1989): 713–64. http://dx.doi.org/10.1021/cr00094a002.

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31

Garcia-Manyes, S. "Arsenic speciation in contaminated soils." Talanta 58, no. 1 (2002): 97–109. http://dx.doi.org/10.1016/s0039-9140(02)00259-x.

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32

Raab, Andrea, and J. Feldmann. "Arsenic speciation in hair extracts." Analytical and Bioanalytical Chemistry 381, no. 2 (2004): 332–38. http://dx.doi.org/10.1007/s00216-004-2796-6.

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33

Savage, Kaye S., Dennis K. Bird, and Peggy A. O'Day. "Arsenic speciation in synthetic jarosite." Chemical Geology 215, no. 1-4 (2005): 473–98. http://dx.doi.org/10.1016/j.chemgeo.2004.06.046.

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34

Karthikeyan, S., and S. Hirata. "Arsenic Speciation in Environmental Samples." Analytical Letters 36, no. 11 (2003): 2355–66. http://dx.doi.org/10.1081/al-120024327.

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35

Nearing, Michelle M., Iris Koch, and Kenneth J. Reimer. "Arsenic Speciation in Edible Mushrooms." Environmental Science & Technology 48, no. 24 (2014): 14203–10. http://dx.doi.org/10.1021/es5038468.

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36

Falconer, Travis, and Kevin Kubachka. "Solution to arsenic speciation challenge." Analytical and Bioanalytical Chemistry 415, no. 1 (2023): 5–6. http://dx.doi.org/10.1007/s00216-022-04429-1.

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37

Ng, Jack C. "Environmental Contamination of Arsenic and its Toxicological Impact on Humans." Environmental Chemistry 2, no. 3 (2005): 146. http://dx.doi.org/10.1071/en05062.

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Environmental Context. Tens of millions of people in developing countries are being exposed to excessive levels of arsenic in their drinking water, and this contamination is widely regarded as the largest current calamity of chemical poisoning in the world. However, arsenic can exist in many chemical forms, and these vary widely in solubility, toxicity, and in bioavailability. Therefore, it is critical to be able to measure arsenic speciation accurately and reliably in order to understand its toxicity and design effective measures of remedial action. Abstract. Inorganic arsenic compounds are k

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38

Zhao, Ke, Canwei Mao, Ruiyu Ding, Dean Song, Liya Ge, and Grzegorz Lisak. "Simultaneous Speciation of Inorganic Arsenic (III and V) Utilizing Gold-Manganese Oxide Nanoparticles Modified Electrochemical Sensors." ECS Meeting Abstracts MA2024-02, no. 65 (2024): 4380. https://doi.org/10.1149/ma2024-02654380mtgabs.

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Inorganic arsenic exists primarily in two stable valence states: III and V, each exhibiting distinct toxicological characteristics[1, 2]. Precisely distinguishing between As(III) and As(V) is essential for accurate risk assessment and environmental monitoring. Traditionally, this speciation involves a combination of costly and bulky instruments such as high-performance liquid chromatography (HPLC) and inductively coupled plasma mass spectrometry (ICP-MS)[3]. In response to the need for more efficient methods, alternative approaches like voltammetry have been explored. Despite attempts using go

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Tongesayi, Tsanangurayi, and Ronald B. Smart. "Arsenic Speciation: Reduction of Arsenic(V) to Arsenic(III) by Fulvic Acid." Environmental Chemistry 3, no. 2 (2006): 137. http://dx.doi.org/10.1071/en05095.

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Environmental Context.Most technologies for arsenic removal from water are based on the oxidation of the more toxic and more mobile arsenic(iii) to the less toxic and less mobile arsenic(v). As a result, research effort has been focussed on the oxidation of arsenic(iii) to arsenic(v). It is equally important to explore environmental factors that enhance the reduction of arsenic(v) to arsenic(iii). An understanding of the redox cycling of arsenic could result in the development of cheaper and more efficient arsenic removal technologies, especially for impoverished communities severely threatene

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40

Brima, Eid I., Richard O. Jenkins, and Parvez I. Haris. "Understanding arsenic metabolism through spectroscopic determination of arsenic in human urine." Spectroscopy 20, no. 3 (2006): 125–51. http://dx.doi.org/10.1155/2006/759046.

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In this review we discuss a range of spectroscopic techniques that are currently used for analysis of arsenic in human urine for understanding arsenic metabolism and toxicity, especially in relation to genetics/ethnicity, ingestion studies and exposure to arsenic through drinking water and diet. Spectroscopic techniques used for analysis of arsenic in human urine include inductively coupled plasma mass spectrometry (ICP-MS), hydride generation atomic absorption spectrometry (HG-AAS), hydride generation atomic fluorescence spectrometry (HG-AFS), graphite furnace atomic absorption spectrometry (

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41

Zhang, Weihua, Yong Cai, Cong Tu, and Lena Q. Ma. "Arsenic speciation and distribution in an arsenic hyperaccumulating plant." Science of The Total Environment 300, no. 1-3 (2002): 167–77. http://dx.doi.org/10.1016/s0048-9697(02)00165-1.

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Ruiz-Chancho, Maria José, José Fermín López-Sánchez, Ernst Schmeisser, Walter Goessler, Kevin A. Francesconi, and R. Rubio. "Arsenic speciation in plants growing in arsenic-contaminated sites." Chemosphere 71, no. 8 (2008): 1522–30. http://dx.doi.org/10.1016/j.chemosphere.2007.11.054.

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43

Bostick, B. C., S. Fendorf, and G. E. Brown. "In situ analysis of thioarsenite complexes in neutral to alkaline arsenic sulphide solutions." Mineralogical Magazine 69, no. 5 (2005): 781–95. http://dx.doi.org/10.1180/0026461056950288.

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AbstractThe solubility of arsenic in anoxic soil and sediment pore waters is strongly influenced by complexation with dissolved sulphide. Despite their importance in arsenic chemistry, thioarsenite complexes have not been well characterized, and considerable questions remain regarding their structure, protonation state, and relative stabilities. Here we use X-ray absorption spectroscopy to examine the type and structure of aqueous arsenic-sulphur complexes in sulphidic solutions under neutral to alkaline pH. Arsenic formed a variety of thioarsenites, including AsS(SH)(OH)—, As(SH)S22—, AsS33—a

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44

Wang, Ningxin, Zijun Ye, Liping Huang, Chushu Zhang, Yunxue Guo, and Wei Zhang. "Arsenic Occurrence and Cycling in the Aquatic Environment: A Comparison between Freshwater and Seawater." Water 15, no. 1 (2022): 147. http://dx.doi.org/10.3390/w15010147.

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Owing to the toxicity and adverse effects of arsenic on human health, its levels in aquatic environments are among the most serious threats to humans globally. To improve our understanding of its occurrence and cycling in aquatic environments, herein we review the concentration, speciation, and distribution of arsenic in freshwater, seawater, and sediments. Many natural processes, such as rock weathering and geothermal activities, contribute to the background arsenic concentrations in the natural environment, whereas metal mining and smelting are anthropogenic sources of arsenic in the water.

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Waring, Joel, William Maher, Simon Foster, and Frank Krikowa. "Occurrence and Speciation of Arsenic in Common Australian Coastal Polychaete Species." Environmental Chemistry 2, no. 2 (2005): 108. http://dx.doi.org/10.1071/en05027.

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Environmental Context. In well-oxygenated water and sediments, nearly all arsenic is present as arsenate (AsO43−). As arsenate is a phosphate (PO43−) analogue, organisms living in arsenate-rich environments must acquire the nutrient phosphorus yet avoid arsenic toxicity. Organisms take in and transform arsenic compounds by many means. Three major modes of arsenic biotransformation have been found to occur in the environment—redox transformation between arsenate and arsenite (AsO2−), the reduction and methylation of arsenic, and the biosynthesis of organoarsenic compounds such as arsenobetaine.

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Hutton, C., D. W. Bryce, W. Russeau, et al. "Aqueous and solid-phase speciation of arsenic in Cornish soils." Mineralogical Magazine 69, no. 5 (2005): 577–89. http://dx.doi.org/10.1180/0026461056950272.

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AbstractCornwall (UK) has suffered extensive arsenic contamination due to the historic mining and processing of mineral ores. Standard procedures for contaminated land risk assessment (DEFRA and Environment Agency, 2002a) are probably unworkable in Cornwall, with a very large number of sites classified as contaminated by arsenic. Methods of measuring the speciation and mobility of arsenic are essential for effective and rapid risk assessments of arsenic contamination.Three clusters of lysimeters were installed in three different areas of an arsenic-contaminated Cornish site. A novel phosphoric

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Rubinos, D. A., M. Arias, F. Díaz-Fierros, and M. T. Barral. "Speciation of adsorbed arsenic(V) on red mud using a sequential extraction procedure." Mineralogical Magazine 69, no. 5 (2005): 591–600. http://dx.doi.org/10.1180/0026461056950273.

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AbstractThe distribution of sorbed arsenic(V) among different geochemical fractions for arsenic(V)-loaded red mud, an oxide-rich residue from bauxite refining that has been proposed as an adsorbent for arsenic, was studied as a function of sorbed arsenic(V) concentration using a sequential extraction procedure. The release of previously sorbed arsenic(V) was also studied as a function of pH and arsenic(V) concentration. Most sorbed arsenic(V) (0.39–7.86 mmol kg–1) was associated with amorphous and crystalline Al and Fe oxides (24.1–43.8% and 24.7–59.0% of total sorbed arsenic, respectively). E

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Yoshinaga, Jun, Amit Chatterjee, Yasuyuki Shibata, Masatoshi Morita, and John S. Edmonds. "Human Urine Certified Reference Material for Arsenic Speciation." Clinical Chemistry 46, no. 11 (2000): 1781–86. http://dx.doi.org/10.1093/clinchem/46.11.1781.

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Abstract Background: Chemical speciation analysis is essential for the biological monitoring of inorganic arsenic exposure using urine as indicator medium. There is increasing demand for a certified reference material (CRM) of urine matrix for arsenic speciation. Methods: Urine (10 L) was collected from non-occupationally exposed Japanese males. We prepared 954 bottles of urine, each containing ∼10 mL, after filtering and blending the urine stock. The urine in each bottle was freeze-dried. Between-bottle homogeneity was confirmed by measuring the concentrations of selected minor and trace elem

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Samanta, Gautam, and Dennis A. Clifford. "Preservation and Field Speciation of Inorganic Arsenic Species in Groundwater." Water Quality Research Journal 41, no. 2 (2006): 107–16. http://dx.doi.org/10.2166/wqrj.2006.013.

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Abstract This research describes the development of a dual preservation- and field-speciation technique for As(III) and As(V) speciation of a sample preserved with ethylenediaminetetraacetic acid (EDTA) and acetic acid (HAc). The new method was compared with existing preservation- and field-speciation methods and was shown to be accurate and precise in spite of possible interference from ferrous iron in the sample. The new preservation-speciation method was further evaluated on 55 drinking water wells (18 samples in triplicate) in Minnesota, North Dakota and California with the result that As(

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Ardini, Francisco, Greta Dan, and Marco Grotti. "Arsenic speciation analysis of environmental samples." Journal of Analytical Atomic Spectrometry 35, no. 2 (2020): 215–37. http://dx.doi.org/10.1039/c9ja00333a.

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Relevant 2004–2018 papers on arsenic speciation analysis of environmental samples have been reviewed, with the focus on the analytical procedures according to the matrix investigated and the species researched.

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