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Journal articles on the topic 'Sulfite determination'

Author: Grafiati

Published: 4 June 2021

Last updated: 7 February 2022

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1

Anderson, Courtney, Charles R. Warner, Daniel H. Daniels, and Kathlene L. Padgett. "Ion Chromatographic Determination of Sulfites in Foods." Journal of AOAC INTERNATIONAL 69, no. 1 (1986): 14–19. http://dx.doi.org/10.1093/jaoac/69.1.14.

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Abstract Ion chromatography (IC) is shown to be a promising technique for the determination of sulfites (SO2, SO⅔) in foods. Results of a 10 min flash distillation and 10 min IC determination compare favorably with the results from the conventional Monier-Williams method for total sulfite in a variety of food matrices. The IC technique also provides a wealth of additional information, such as (1) sulfite and sulfate (oxidized sulfite) content of the spiking or treatment solution, (2) residual sulfite applied to the food after oxidation losses in the treatment process, (3) free sulfite in foods

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2

Kawamura, Yoshiya, Nobuko Kubo, Haruhiko Arata, Yoshio Ito, Masao Tamura, and Katsuhiko Yamamoto. "A Microbial Sensor for Determination of Sulfite in Wines." Journal of AOAC INTERNATIONAL 77, no. 4 (1994): 1052–56. http://dx.doi.org/10.1093/jaoac/77.4.1052.

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Abstract The method developed for determining sulfite in wines uses a microbial sensor that consists of sulfur-oxidizing autotrophic bacteria and an oxygen electrode (SO2 meter; SOM), which selectively determines free sulfite in an acidified wine sample. Total sulfite is determined after alkaline extraction; ferrous sulfate is added to the extractant to prevent oxidation. The SOM data showed a coefficient of a variation of 1 % or less (n = 5). The total sulfites in wine determined by SOM were compared with those determined by the Monier–Williams method. Excellent agreement was achieved, as ind

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3

Carlos, Katherine S., and Lowri S. de Jager. "Determination of Sulfite in Food by Liquid Chromatography Tandem Mass Spectrometry: Collaborative Study." Journal of AOAC INTERNATIONAL 100, no. 6 (2017): 1785–94. http://dx.doi.org/10.5740/jaoacint.17-0033.

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Abstract Sulfites are added to a wide range of food and beverage products to prevent browning or oxidation. Although most of the population do not experience side effects from consuming sulfites, a small subset has been shown to experience an “allergic-like” response. For this reason, the U.S. Food and Drug Administration requires that sulfites be labeled on all products that contain more than 10 mg/kg (parts per million) sulfur dioxide. The current regulatory method, optimized Monier–Williams (OMW) Official Method990.28, has been successful in quantifying sulfites in most matrixes, but is tim

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4

Ji, A. J., S. R. Savon, and D. W. Jacobsen. "Determination of total serum sulfite by HPLC with fluorescence detection." Clinical Chemistry 41, no. 6 (1995): 897–903. http://dx.doi.org/10.1093/clinchem/41.6.897.

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Abstract An estimated 500,000 individuals in the US, mostly steroid-dependent asthmatics, suffer severe adverse reactions to sulfites in foods, beverages, and pharmaceutical products. In an attempt to understand the pathogenesis of sulfite hypersensitivity, we have developed an assay for the determination of total serum sulfite by utilizing: (a) reductive release of serum protein-bound sulfite; (b) derivatization of free sulfite with monobromobimane; (c) separation of sulfite-bimane from thiol-bimanes by reversed-phase HPLC; and (d) quantitation of sulfite-bimane by fluorescence detection. The

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5

Sonne, Kim, and Purnendu K. Dasgupta. "Simultaneous photometric flow-injection determination of sulfide, polysulfide, sulfite, thiosulfate, and sulfate." Analytical Chemistry 63, no. 5 (1991): 427–32. http://dx.doi.org/10.1021/ac00005a008.

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6

Xu, Dan Hua, Peng Chen, and Shi Hua Liu. "Ion Chromatography for the Continuous Determination of Sulfite and Sulfide in Gypsum and Gypsum Products." Key Engineering Materials 726 (January 2017): 75–79. http://dx.doi.org/10.4028/www.scientific.net/kem.726.75.

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A quantitative ion chromatographic analytical method for the continuous determination of the sulfite and sulfide in gypsum and gypsum products is proposed. This paper established a determination method removal interference with each other between sulfite and sulfide that measure sulfite and sulfide content respectively. A set of calibration graphs for standards with different concentration ranges with indicate a good linear regression.The method presents good repeatability because in all cases the observed RSD was below 1% through two chromatographic parameters both of the retention time and t

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7

Bravo, Paz, Yo-Ying Chen, Galo Ramirez, et al. "Electrooxidation and determination of sulfite in ethanol–water solutions using poly-Cu(II)-tetrakis(x-aminophenyl)porphyrin/glassy carbon modified electrodes." Collection of Czechoslovak Chemical Communications 74, no. 4 (2009): 545–57. http://dx.doi.org/10.1135/cccc2008173.

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A comparison is made of the behavior of three Cu(II)-porphyrins (with the amino substituents in different positions on the periphery of the ligand) electropolymerized on glassy carbon electrodes in HCl as solvent. The electropolymerized films show a certain degree of demetallation but the Cu amount of porphyrin in each case is sufficient to catalyze the oxidation of sulfite and hydrogensulfite in ethanol–water solutions. The ligands of the porphyrins are almost inactive in the electrocatalysis of the sulfite. The oxidation processes are favored at low scan rates. The foot of the oxidation wave

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8

Armentia-Alvarez, Arantza, M. Jesus Peña-Egedo, and Concepcion Garcia-Moreno. "Improved Method for Determination of Sulfites in Shrimp." Journal of AOAC INTERNATIONAL 76, no. 3 (1993): 565–69. http://dx.doi.org/10.1093/jaoac/76.3.565.

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Abstract A method for the determination of sulfites in shrimp developed by Kim and Kim and modified by Paino-Campa et al. for sausages has been further modified. Total sulfites are extracted by initially adding aluminum oxide to the sample and using an extraction solution at pH 12. In the reproducibility assays, coefficients of variation (CVs) were 4.8% for free sulfite and 7.8% for total sulfite in the edible part of the shrimp. In the inedible part, CVs were 7.5% and 8.9% for free and total sulfite, respectively. Mean recovery was 87.8% for the edible part and 84.4% for the inedible part of

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9

Edberg, Ulla, Maija-Liisa Anttonen, Karen Berg-Nilsen, et al. "Enzymatic Determination of Sulfite in Foods: NMKL Interlaboratory Study." Journal of AOAC INTERNATIONAL 76, no. 1 (1993): 53–58. http://dx.doi.org/10.1093/jaoac/76.1.53.

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Abstract An enzymatic method for the determination of sulfite in foods was collaboratively studied in Nordic industry and government laboratories. The sulfite in liquid foods or extracts of solid foods is analyzed according to the following principle: Sulfite ions are oxidized to sulfate ions by oxygen in the presence of sulfite oxidase, thereby forming hydrogen peroxide. Hydrogen peroxide is transformed to water by reduced nicotinamide adenine dinucleotide (NADH) in the presence of NADH peroxidase. In this reaction, NAD+ is formed (and NADH is consumed) in amounts proportional to the sulfite

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10

Huang, Zhao Long, Shao Ping Feng, Du Shu Huang, et al. "Improvement on Determination of the Components of Industrial Sodium Polysulfide." Advanced Materials Research 634-638 (January 2013): 87–90. http://dx.doi.org/10.4028/www.scientific.net/amr.634-638.87.

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The analytical method on sodium sulfide, sodium sulfite, sodium hydroxide and sodium thiosulfate in sodium polysulfide solution was studied in this paper. The questions in concealing sodium sulfite by formaldehyde and precipitating sodium sulfide by zine acetate, a common method reported in some papers before, was discussed. The improvement on concealing Na2SO3 by SrCl2 instead of formaldehyde and precipitating Na2S by Zn(OH)2 instead of Zn(Ac)2 and testing concentration of NaOH in the mixture, was studied. The results showed that new method is simpler, more rapid, more completely and accurate

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11

Smith, Vicki J. "Determination of sulfite using a sulfite oxidase enzyme electrode." Analytical Chemistry 59, no. 18 (1987): 2256–59. http://dx.doi.org/10.1021/ac00145a010.

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12

KOH, Tomozo, and Yasuyuki MIURA. "Spectrophotometric determination of micro amounts of sulfide, sulfite and thiosulfate." Analytical Sciences 3, no. 6 (1987): 543–47. http://dx.doi.org/10.2116/analsci.3.543.

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13

Koh, Tomozo, Katsuaki Okabe, and Yasuyuki Miura. "Separation and determination of thiosulfate, sulfite and sulfide in mixtures." Analyst 118, no. 6 (1993): 669. http://dx.doi.org/10.1039/an9931800669.

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14

Kim, Young-Kyung, Eunmi Koh, Sang-Yong Park, et al. "Determination of Sulfite in Oriental Herbal Medicines." Journal of AOAC INTERNATIONAL 83, no. 5 (2000): 1149–54. http://dx.doi.org/10.1093/jaoac/83.5.1149.

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Abstract Sulfite was detected in 7 varieties of Oriental herbal medicines (Pueraria radix, Zingiberis rhizoma, Platycodon radix, Adenophora radix, Pinellia tuber, Astragalus radix, and Paeonia radix) on the Korean market. Sulfiting of commercial Oriental herbal medicines by fumigation with burning bituminous coal was simulated, and the accumulation of sulfite was investigated by using fresh Platycodon radix roots obtained from a growing field. The sulfite level reached a plateau in 9 h, and the maximum sulfite level found by the Monier-Williams (MW) method (AOAC 990.28) was 1020 ppm. The sulfi

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15

Kim, Hie-Joon. "Comparison of the Ion Exclusion Chromatographic Method with the Monier-Williams Method for Determination of Total Sulfite in Foods." Journal of AOAC INTERNATIONAL 72, no. 2 (1989): 266–72. http://dx.doi.org/10.1093/jaoac/72.2.266.

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Abstract Experimental data comparing the alkali extraction/ion exclusion chromatographic method with the Monier-Williams method for determination of total sulfite are presented in (a) enzymatic and nonenzymatic browning systems, (b) vegetables containing naturally occurring sulfite, and (c) a carbohydrate-type food additive, erythorbic acid. Excellent agreement, with a linear correlation coefficient of 0.99, was observed in fresh potato samples homogenized with sulfite and allowed to react for different time intervals (enzymatic browning system). A good overall correlation was observed in dehy

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16

Safavi, Afsaneh, Omran Moradlou, and Saeed Maesum. "Simultaneous kinetic determination of sulfite and sulfide using artificial neural networks." Talanta 62, no. 1 (2004): 51–56. http://dx.doi.org/10.1016/s0039-9140(03)00399-0.

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17

Pei, Xiaoliang, Haiyu Tian, Weibing Zhang, Albert M. Brouwer, and Junhong Qian. "Colorimetric and fluorescent determination of sulfide and sulfite with kinetic discrimination." Analyst 139, no. 20 (2014): 5290–96. http://dx.doi.org/10.1039/c4an01086h.

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18

Koh, Tomozo, and Katsuaki Okabe. "Spectrophotometric determination of sulfide, sulfite, thiosulfate, trithionate and tetrathionate in mixtures." Analyst 119, no. 11 (1994): 2457. http://dx.doi.org/10.1039/an9941902457.

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19

Bendtsen, Anders Broe, and Søren Storgaard Jørgensen. "Determination of Total and Free Sulfite in Unstabilized Beer by Flow Injection Analysis." Journal of AOAC INTERNATIONAL 77, no. 4 (1994): 948–51. http://dx.doi.org/10.1093/jaoac/77.4.948.

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Abstract The AOAC methods for the determination of total and free sulfite by flow injection analysis (FIA) were modified for the analysis of unstabilized beer. Suggested improvements to the methods include stabilizing the sulfite standards with EDTA, changing the FIA manifold to decrease the system dispersion, and using a nonlinear calibration curve. The modifications are simple to implement and provide a more stable, sensitive, and accurate method. The method for the determination of free sulfite is criticized, because the dynamic range of the method is very limited. Analysis of several beer

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20

Abdel-Latif, Monzir S. "New Spectrophotometric Method for Sulfite Determination." Analytical Letters 27, no. 13 (1994): 2601–14. http://dx.doi.org/10.1080/00032719408002664.

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21

Masár, Marián, Mariana Danková, Eva Ölvecká, Adela Stachurová, Dušan Kaniansky, and Bernd Stanislawski. "Determination of total sulfite in wine." Journal of Chromatography A 1084, no. 1-2 (2005): 101–7. http://dx.doi.org/10.1016/j.chroma.2004.08.134.

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22

Wang, Lin, Guo Qiang Li, Yong Fa Zhang, Zhen Zhen Li, Yu Liang Shi, and Ya Zhen Wang. "Interference Elimination of Sulfide Determination by Iodometry." Advanced Materials Research 790 (September 2013): 575–78. http://dx.doi.org/10.4028/www.scientific.net/amr.790.575.

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As a classical method for sulfide determination in wastewater, iodimetry is adopted by many countries. But the existing of high concentration of reducing materials such as thiosulfate, sulfite and dissolved organic, which cant be eliminated by the pretreatment of zinc acetate-precipitation filtration, have an important influence on determination. The study on elimination method is carried out in this paper. It is indicated that the interference of S2O32- and SO32- can be eliminated by washing sedimentation with KOH solution of 10%. Iodometric titration with the pretreatment of zinc acetate-pre

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23

Holak, Walter, and John Specchio. "Determination of Sulfites in Foods by Simultaneous Nitrogen Purging and Differential Pulse Polarography." Journal of AOAC INTERNATIONAL 72, no. 3 (1989): 476–80. http://dx.doi.org/10.1093/jaoac/72.3.476.

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Abstract An improved technique has been developed for determination of sulfites in food by differential pulse polarography. A Teflon™ sleeve is fitted to the dropping mercury electrode capillary so that SO2 is purged from the sample and simultaneously detected at peak potential. Bound sulfite in the sample is released at room temperature by addition of base in the absence of oxygen. For some foods, the prepared sample was passed through a Sep-Pak C-18 cartridge to remove naturally occurring sulfur compounds so that only added sulfite is measured. The level of detection was approximately 1 μg S

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24

Yuan, Dong, and Da You Fu. "Rapid Determination of Sulfide in Tannery Wastewater by Flow Injection Spectrophotometry." Applied Mechanics and Materials 675-677 (October 2014): 310–13. http://dx.doi.org/10.4028/www.scientific.net/amm.675-677.310.

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A simple and rapid spectrophotometric method for flow injection determination of sulfite in tan wastewater is described. It was based on the fade reaction of sulfide ion with Ag (I)- (5-Bromo-2-pyridylazo)-5-diethyl-aminophenol (5-Br-PADAP) in NaAc-HAc medium. The optimum conditions allow a linear calibration range of 0.01-1.10 μg ml-1sulfide ion. The detection limit is 0.0043 μg ml-1 (S/N=3), and the relative standard deviation for night replicate measurements is 2.1% for 0.5μg ml-1of sulfide ion. The procedure has been applied to the determination of sulfide in tannery wastewater. The result

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25

Addala, Ramya, Leonard Fong, Mihir Vasavada, and Siva Subramanian. "Influence of Distillation Temperature in the Determination of Added Sulfites in Dehydrated Garlic Powders Using the Modified Optimized Monier-Williams Method." Journal of AOAC INTERNATIONAL 99, no. 3 (2016): 721–24. http://dx.doi.org/10.5740/jaoacint.15-0313.

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Abstract Influence of distillation temperature on the determination of added sulfites in dehydrated garlic originating from China and California using the modified optimized Monier-Williams method was evaluated. In the study, the temperature of the distillation was monitored and maintained from 90° to 95°C instead of boiling temperature (&gt;95°C). Samples from 38 unsulfited dehydrated garlic powders were analyzed at the 90° to 95°C temperature and at boiling temperature (&gt;95°C) at 94 m above sea level. At the boiling distillation temperature, 25 of the 38 unsulfited garlic samples

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26

Yuan, Dong, Da You Fu, and Wen Yuan Tan. "Rapid Determination of Sulfite by Flow Injection Analysis Based on Fuchsin′s Addition." Applied Mechanics and Materials 295-298 (February 2013): 950–53. http://dx.doi.org/10.4028/www.scientific.net/amm.295-298.950.

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A rapid spectrophotometric method for flow injection determination of sulfite in tan wastewater is described. The proposed method was based on the addition reaction of sulfite with fuchsin in Na2B4O7-NaOH medium. The optimum conditions allow a linear calibration range of 0.01-1.20 μg ml-1 SO32-. The detection limit is 0.0023μg ml-1 (S/N=3), and the relative standard deviation for night replicate measurements is 1.1% for 0.5μg ml-1 of sulfite. The sampling rate is 60 samples h-1. The procedure has been applied to the determination of sulfite in tan wastewater. The results were in good agreement

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27

KOH, Tomozo, and Katsuaki OKABE. "Separation and Spectrophotometric Determination of Thiosulfate, Sulfite and Sulfide in Their Mixtures." Analytical Sciences 8, no. 3 (1992): 285–91. http://dx.doi.org/10.2116/analsci.8.285.

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28

Alarfaj, Nawal A., and Maha F. El-Tohamy. "Eu(III)-Sensitized Luminescence Probe for Determination of Tolnaftate in Pharmaceuticals and Biological Fluids." Journal of AOAC INTERNATIONAL 99, no. 2 (2016): 380–85. http://dx.doi.org/10.5740/jaoacint.15-0218.

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Abstract A highly selective, sensitive, accurate, and reproducible luminescence procedure for determination of antifungal drug tolnaftate was developed. The introduced method was based on the formation of Europa Universalis III (Eu(III))-tolnaftate complex using sodium sulfite as a deoxygenated agent in the presence of acetate buffer (pH = 6) and micellar solution of anionic surfactant sodium dodecyl sulfate. The optimum conditions (effect of pH, buffer, surfactant, Eu(III), and sodium sulfite concentrations) for the luminescence signal were investigated and optimized. The luminescence signals

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29

Perfetti, Gracia A., Frank L. Joe, and Gregory W. Diachenko. "Liquid Chromatographic Determination of Sulfite in Grapes and Selected Grape Products." Journal of AOAC INTERNATIONAL 72, no. 6 (1989): 903–6. http://dx.doi.org/10.1093/jaoac/72.6.903.

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Abstract A liquid chromatographic (LC) method is described for the determination of sulfite in grapes and certain grape products. Sulfite is extracted from grapes with aqueous formaldehyde solution buffered at pH 5; free sulfite is converted to hydroxymethylsulfonate (HMS), which is extremely stable at pH 3-7. Subsequent heating to 80°C for 30 min converts reversibly bound forms of sulfite to HMS. The extract is then analyzed by reverse-phase ion-pairing liquid chromatography, using a Cjg column and a mobile phase of aqueous 0.005M tetrabutylammonium ion in 0.05M acetate, pH 4.7, and a flow ra

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30

Akasaka, Kazuaki, Hiroshi Ohrui, Hiroshi Meguro, Tateo Suzuki, and Harufumi Miwa. "Fluorometric Determination of Total and Bound Sulfite in Wine by N-(9-Acridinyl)maleimide." Journal of AOAC INTERNATIONAL 76, no. 6 (1993): 1385–88. http://dx.doi.org/10.1093/jaoac/76.6.1385.

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Abstract N-(9-Acridinyl)maleimide (NAM) reacts with sulfite in wine and gives strong fluorescent derivatives that lead to highly sensitive fluorometry of both total and bound sulfite in wine. Values of free and bound sulfite in wine determined by the NAM method and the modified Rankine method agreed. Sulfite was determined in &lt;200 μL wine within 2 h.

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31

Cabré, F., M. Cascante, and Ei Canela. "A Sensitive Enzymatic Method of Sulfite Determination." Analytical Letters 23, no. 1 (1990): 23–30. http://dx.doi.org/10.1080/00032719008052422.

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32

Adeloju, S. B., S. J. Shaw, and G. G. Wallace. "Polypyrrole-based amperometric biosensor for sulfite determination." Electroanalysis 6, no. 10 (1994): 865–70. http://dx.doi.org/10.1002/elan.1140061010.

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33

Raman, V., Mewa Singh, and D. C. Parashar. "Indirect spectrophotometric determination of sulfur dioxide (sulfite)." Microchemical Journal 33, no. 2 (1986): 223–25. http://dx.doi.org/10.1016/0026-265x(86)90059-7.

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34

Fonong, Tekum. "Amperometric determination of sulfite with sulfite oxidase immobilized at a platinum electrode surface." Analytica Chimica Acta 184 (1986): 287–90. http://dx.doi.org/10.1016/s0003-2670(00)86493-4.

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35

Fassnidge, Dean, and Earl Van Engel. "Evaluation of a Sulfite Oxidase Enzyme Electrode for Determination of Sulfite in Beer." Journal of the American Society of Brewing Chemists 48, no. 4 (1990): 122–24. http://dx.doi.org/10.1094/asbcj-48-0122.

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36

Steudel, Ralf, Gabriele Holdt, and Regine Nagorka. "On the Autoxidation of Aqueous Sodium Polysulfide [1]." Zeitschrift für Naturforschung B 41, no. 12 (1986): 1519–22. http://dx.doi.org/10.1515/znb-1986-1208.

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AbstractAqueous sodium polysulfide of composition in the range Na2S2.0 to Na2S4.6 undergoes autoxidation by either air or pure oxygen at temperatures of between 23 and 40 °C according to the equation [xxx]Iodometric determination, vibrational spectra and ion-pair chromatography showed that neither sulfate, sulfite nor polythionates are formed and that the sulfur precipitated consists of S8 (≥ 99%).

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37

Bosque-Sendra, Juan M., Francisca Molina, and Mounir Nechar. "Determination of Sulfite in Rainwater by Solid-Phase Spectrophotometry." Journal of AOAC INTERNATIONAL 77, no. 5 (1994): 1224–29. http://dx.doi.org/10.1093/jaoac/77.5.1224.

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Abstract A simple and specific method was developed for the determination of sulfite in rainwater based on solid-phase spectrophotometry (SPS). Rainwater was collected on morpholine, sulfite was stabilized by forming an adduct that reacted with pararosanil-ine and formaldehyde, and the reaction product was fixed on Dowex 1-X8 resin. The absorbance of the solid phase was measured directly at 565 and 700 nm. The calibration curve was linear in the concentration range of 1-50 μg/L in solution (relative standard deviation = 1.7%); the International Union of Pure and Applied Chemistry detection lim

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38

Kushkevych, Ivan, Daryna Abdulina, Jozef Kováč, et al. "Adenosine-5′-Phosphosulfate- and Sulfite Reductases Activities of Sulfate-Reducing Bacteria from Various Environments." Biomolecules 10, no. 6 (2020): 921. http://dx.doi.org/10.3390/biom10060921.

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A comparative study of the kinetic characteristics (specific activity, initial and maximum rate, and affinity for substrates) of key enzymes of assimilatory sulfate reduction (APS reductase and dissimilatory sulfite reductase) in cell-free extracts of sulphate-reducing bacteria (SRB) from various biotopes was performed. The material for the study represented different strains of SRB from various ecotopes. Microbiological (isolation and cultivation), biochemical (free cell extract preparation) and chemical (enzyme activity determination) methods served in defining kinetic characteristics of SRB

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39

Almeida, Pedro L., Thais H. Figueiredo do Bonfim, Francisco Antonio S. Cunha, Kássio M. G. Lima, Jailane S. Aquino, and Luciano F. Almeida. "A rapid, sensitive and green analytical method for the determination of sulfite in vinegars using pararosaniline reaction with image detection." Analytical Methods 10, no. 4 (2018): 448–58. http://dx.doi.org/10.1039/c7ay02155k.

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A green, rapid and sensitive automated analytical method with imaging detection for the determination of sulfite in vinegars using the pararosaniline (PRA)–formaldehyde–sulfite reaction is demonstrated.

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40

Dupraz, Sébastien, Bénédicte Ménez, and François Guyot. "Fast Determination of the Main Reduced Sulfur Species in Aquatic Systems by a Direct and Second-Derivative Spectrophotometric Method." Journal of Chemistry 2019 (July 2, 2019): 1–12. http://dx.doi.org/10.1155/2019/1039487.

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The determination of reduced sulfur species in aquatic systems is not an easy and fast task to accomplish regarding the numerous possible interferences and risks of oxidation that occur with the usual methods of quantification. The method presented here is a direct spectrophotometric method that can be used to quantify sulfides, sulfites, and thiosulfates in a simple and rapid way. The principle is based on the comparison of second-derivative absorbance spectra of the same sample at different pH (9.2, 4.7, and 1.0) and selected absorption wavelengths (250 and 278 nm). This method has been succ

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41

Dasgupta, Purnendu K., and Huey Chin Yang. "Trace determination of aqueous sulfite, sulfide and methanethiol by fluorometric flow injection analysis." Analytical Chemistry 58, no. 13 (1986): 2839–44. http://dx.doi.org/10.1021/ac00126a055.

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42

Karimi-Maleh, Hassan, Ali A. Ensafi, Hadi Beitollahi, Vahid Nasiri, Mohammad A. Khalilzadeh, and Pourya Biparva. "Electrocatalytic determination of sulfite using a modified carbon nanotubes paste electrode: application for determination of sulfite in real samples." Ionics 18, no. 7 (2012): 687–94. http://dx.doi.org/10.1007/s11581-011-0654-z.

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43

Perfetti, Gracia A., and Gregory W. Diachenko. "Determination of Sulfite in Dried Garlic by Reversed-Phase Ion-Pairing Liquid Chromatography with Post-Column Detection." Journal of AOAC INTERNATIONAL 86, no. 3 (2003): 544–50. http://dx.doi.org/10.1093/jaoac/86.3.544.

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Abstract A method is described for determining sulfite in dried garlic. Garlic is extracted with an HCl solution to inhibit the formation of allicin, which interferes with the determination of sulfite. After cleanup of the extract on a C18 solid-phase extraction column, sulfite is converted to hydroxymethylsulfonate (HMS) by adding formal-dehyde and heating to 50°C. HMS is determined by reversed-phase ion-pairing liquid chromatography with post-column detection. The post-column reaction system consists of the addition of KOH to convert HMS to sulfite ion, followed by the addition of 5,5'-dithi

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44

Lafeuille, Jean-Louis, Stephane Lefevre, and Djamila Achouri. "Determination of Added Sulfites in Dried Garlic with a Modified Version of the Optimized Monier-Williams Method." Journal of AOAC INTERNATIONAL 90, no. 4 (2007): 1090–97. http://dx.doi.org/10.1093/jaoac/90.4.1090.

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Abstract The optimized Monier-Williams method is slightly modified so that it could be applied for determining sulfite content in dried garlic. Dried garlic sample is directly acidified in a reactor at a pH below 3. At this pH level, the alliinase enzyme activity is irreversibly blocked, and the sulfur-containing amino acids such as alliin (the most abundant) present in dried garlic cannot be transformed into corresponding thiosulfinates such as allicin, which is absent in dried garlic. This prevents allicin from reacting with added sulfites and being probably converted to S-allyl thiosulfate,

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Suzuki, Masayasu, Soomi Lee, Keiko Fujii, et al. "Determination of Sulfite Ion by Using Microbial Sensor." Analytical Letters 25, no. 6 (1992): 973–82. http://dx.doi.org/10.1080/00032719208020052.

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Khabarov, Yu G., and V. A. Veshnyakov. "Spectrophotometric determination of mercury(II) with sodium sulfite." Journal of Analytical Chemistry 64, no. 3 (2009): 238–40. http://dx.doi.org/10.1134/s1061934809030058.

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Qin, Wei, Z. J. Zhang, and Cheng-Jie Zhang. "Chemiluminescence flow system for the determination of sulfite." Fresenius' Journal of Analytical Chemistry 361, no. 8 (1998): 824–26. http://dx.doi.org/10.1007/s002160051023.

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Hillery, Barbara R., Edgar R. Elkins, Charles R. Warner, Dan Daniels, and Thomas Fazio. "Optimized Monier-Williams Method for Determination of Sulfites in Foods: Collaborative Study." Journal of AOAC INTERNATIONAL 72, no. 3 (1989): 470–75. http://dx.doi.org/10.1093/jaoac/72.3.470.

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Abstract A collaborative study was conducted of the Food and Drug Administration (FDA)-optimized Monier-Williams method for determining sulfites in foods. Twenty-one industry and government laboratories participated in the study, which was jointly sponsored by the National Food Processors Association and FDA. Familiarization samples were shipped to each collaborator. Collaborators were permitted to proceed to the main study only after they demonstrated ability to perform the method to ensure that the study tested the performance of the method itself and not that of the individual laboratories.

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AKASAKA, Kazuaki, Tateo SUZUKI, Hiroshi OHRUI, and Hiroshi MEGURO. "Fluorometric determination of sulfite. Part III. Fluorometric determination of sulfite with N-(9-acridinyl)maleimide for high performance liquid chromatography." Agricultural and Biological Chemistry 50, no. 5 (1986): 1139–44. http://dx.doi.org/10.1271/bbb1961.50.1139.

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Daunoravicius, Zydrunas, and Audrius Padarauskas. "Capillary electrophoretic determination of thiosulfate, sulfide and sulfite using in-capillary derivatization with iodine." ELECTROPHORESIS 23, no. 15 (2002): 2439–44. http://dx.doi.org/10.1002/1522-2683(200208)23:15<2439::aid-elps2439>3.0.co;2-z.

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