Log in

Relevant bibliographies by topics / Extraction-spectrophotometric / Journal articles

To see the other types of publications on this topic, follow the link: Extraction-spectrophotometric.

Journal articles on the topic 'Extraction-spectrophotometric'

Author: Grafiati

Published: 5 June 2025

Last updated: 2 August 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'Extraction-spectrophotometric.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Agrawal, Yadvendra K., and Tushar A. Desai. "Extraction-spectrophotometric determination of cadmium." Analyst 111, no. 3 (1986): 305. http://dx.doi.org/10.1039/an9861100305.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Amri, Choirul, Dwi Siswanta, and Mudasir Mudasir. "DETERMINATION OF TRACE NITRITE AS 4-(4-NITROBENZENAZO)- 1-AMINONAPHTHALENE COMPLEX BY EXTRACTION-SPECTROPHOTOMETRY." Indonesian Journal of Chemistry 9, no. 2 (2010): 254–60. http://dx.doi.org/10.22146/ijc.21539.

Full text

Abstract:

A study of extraction-spectrophotometric method for the determination of trace nitrite as 4-(4-nitrobenzenazo)-1-aminonaphthalene complex using n-amylalcohol and chloroform as organic solvents has been done. Results of the study showed that extraction-spectrophotometric determination of nitrite using n-amylalcohol or chloroform was very sensitive and had low limit of detection. Extraction-spectrophotometric method of nitrite using n-amylalcohol gave range of linear concentration 0.000-0.054 mg/L NO2--N, detection limit of 2.09x10-4 mg/L NO2--N, and sensitivity of 34.514 ± 0.398 absorbance unit

APA, Harvard, Vancouver, ISO, and other styles

3

Dimitrov, Atanas, Vania Lekova, Kiril Gavazov, and Boyan Boyanov. "Investigation of the extraction equilibrium of ion-association complexes of molybdenum (VI) with some polyphenols and thiazolyl blue. extraction-spectrophotometric determination of molybdenum." Open Chemistry 3, no. 4 (2005): 747–55. http://dx.doi.org/10.2478/bf02475202.

Full text

Abstract:

AbstractThe extraction process of ternary ion-association complexes of molybdenum (VI) with some polyphenols (4-nitrocatechol, 2,3-dihydroxy naphthalene) and thiazolyl blue has been investigated by using an extraction-spectrophotometric method. The optimum conditions for their quantitative preparation in aqueous medium and subsequent extraction into an organic solvent have been found. The extraction, distribution and association constants, and the recovery factors have been calculated. The composition of the complexes has been determined. A precise, sensitive and simple extraction-spectrophoto

APA, Harvard, Vancouver, ISO, and other styles

4

Selvapathy, P., T. V. Ramakrishna, N. Balasubramanian, and R. Pitchai. "Extraction-spectrophotometric determination of sulphur dioxide." Analyst 112, no. 8 (1987): 1139. http://dx.doi.org/10.1039/an9871201139.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Balasubramanian, N., and B. S. M. Kumar. "Extraction-spectrophotometric determination of hydrogen sulphide." Analyst 115, no. 6 (1990): 859. http://dx.doi.org/10.1039/an9901500859.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

Balasubramanian, N., and B. S. M. Kumar. "Extraction–spectrophotometric determination of sulphur dioxide." Analyst 116, no. 2 (1991): 207–11. http://dx.doi.org/10.1039/an9911600207.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

B., KESHAVAN, and P. KRISHNA PRASAD K. "Extraction and Spectrophotometric Determination of Niobium." Journal of Indian Chemical Society Vol. 69, Feb 1992 (1992): 112–13. https://doi.org/10.5281/zenodo.6131649.

Full text

Abstract:

Department of Post-Graduate Studies and Research in Chemistry, University of Mysore, Mysore-570 006 <em>Manuscript received 26 March 1991, revised 24 December 1991, accepted 7 February 1992</em> Extraction and Spectrophotometric Determination of Niobium.

APA, Harvard, Vancouver, ISO, and other styles

8

Zalov, A. Z., Z. G. Asgarova, Z. Z. Yakhshieva, U. B. Abasguliyeva, and P. F. Нuseynova. "EXTRACTION-SPECTROPHOTOMETRIC STUDY OF THE SYSTEM NICKEL(II) – HALOGENASEMERCAPTOPHENOL -AMINOPHENOL - WATER – CHLOROFORM." Chemical Problems 22, no. 4 (2024): 436–46. http://dx.doi.org/10.32737/2221-8688-2024-4-436-446.

Full text

Abstract:

Reaction of nickel with halogenazomercaptophenol (HAMP) {1-(5-fluoro-2-pyridylazo)-2-hydroxy4-mercaptophenol, 1-(5-chloro-2-pyridylazo)-2-hydroxy-4-mercaptophenol} in the presence aminophenols (AP): 2-(N,N-dimethylaminomethyl)-4-methylphenol, 2-(N,N-dimethylaminomethyl)-4-ethylphenol studied by the Extraction-Photometric method. A single extraction with chloroform yields 97.1–98.9% nickel (II) in the form of a mixed-ligand complex (MLC). The optimal acidity range, at which the optical density is maximum and constant, is at pHop. 3.3 – 7.8 (pH 2.0 – 9.8). Maximum optical density is achieved wit

APA, Harvard, Vancouver, ISO, and other styles

9

Jamil, Dalia M., Evon Akram, Shaimaa bassim, and Alaa Shayea Shubram. "Cloud point extraction-spectrophotometric method –A review." International Journal of Research in Engineering and Innovation 04, no. 02 (2020): 105–8. http://dx.doi.org/10.36037/ijrei.2020.4205.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Agrawal, Y. K., and K. T. John. "Extraction and spectrophotometric determination of titanium(IV)." Analyst 110, no. 1 (1985): 57. http://dx.doi.org/10.1039/an9851000057.

Full text

APA, Harvard, Vancouver, ISO, and other styles

11

Agrawal, Y. K., and V. J. Bhatt. "Extraction and spectrophotometric determination of uranium(VI)." Journal of Radioanalytical and Nuclear Chemistry Articles 97, no. 2 (1986): 255–63. http://dx.doi.org/10.1007/bf02035670.

Full text

APA, Harvard, Vancouver, ISO, and other styles

12

Silva, Darlan Ferreira, and Maria Olimpia Oliveira Rezende. "Optimization of a Microwave Assisted Extraction of Organic Sulphur from Domestic Sewage Sludge by UV-Vis Spectrophotometry Determination." Journal of Agricultural Studies 5, no. 4 (2017): 1. http://dx.doi.org/10.5296/jas.v5i4.11888.

Full text

Abstract:

An alternative method for microwave-assisted extraction of organic sulphur in sewage sludge samples was optimized based on response surface methodology. The extraction process was defined by a 23 factorial design. In the factorial design, the temperature, the extraction time and the volume of hydrochloric acid in the solvent mixture were evaluated. The samples were extracted with a mixture of nitric acid and hydrochloric acid. The data obtained for study were based on the concentration of sulphur in the sulfate form (S-SO42-) obtained spectrophotometrically in the sludge samples. The initial e

APA, Harvard, Vancouver, ISO, and other styles

13

R., DASS, and R. MEHTA J. "A Rapid Highly Selective Spectrophotometric Determination of Molybdenum(VI) using 5,7-Diiodo-8-hydroxyquinoline." Journal of Indian Chemical Society Vol. 74, June 1997 (1997): 512–13. https://doi.org/10.5281/zenodo.5882590.

Full text

Abstract:

Department of Chemistry, Kurukshetra University. Kurukshetra-136 119 Manuscript received 10 October 1995, rev1sed 19 February 1996, accepted 19 March 1996 A Rapid Highly Selective Spectrophotometric Determination of Molybdenum(VI) using 5,7-Diiodo-8-hydroxyquinoline  

APA, Harvard, Vancouver, ISO, and other styles

14

Agrawal, Yadvendra K., and Kirit H. Desai. "Extraction, Spectrophotometric, and Atomic Absorption Spectrophotometric Determination of Selenium With N-Phenylbenzohydroxamic Acid." Analytical Letters 19, no. 1-2 (1986): 25–36. http://dx.doi.org/10.1080/00032718608066238.

Full text

APA, Harvard, Vancouver, ISO, and other styles

15

Аli, Z. Zalov, A. Novruzova Nazani, A. Mammadova Shafa, and А. Huseinova Gulnar. "Application of 2-(Piperidinomethyl)-4-Methylphenol for Extraction Spectrophotometric Determination of Iron." Chemistry Research Journal 5, no. 1 (2020): 137–44. https://doi.org/10.5281/zenodo.12194709.

Full text

Abstract:

<strong>Abstract </strong>The optimal conditions for the extraction-spectrophotometric determination of iron with 2- (piperidinomethyl) -4-methylphenol (L) based on the Fe<sup>III</sup>-L = 1: 2 complex were as follows: pH (3.8-5.2), PAR concentration (4.5 × 10<sup>–4</sup>mol L<sup>-1</sup>), extraction solvent (CHCl<sub>3</sub>), shaking time (5 min), wavelength for spectrophotometric measurements (535 nm) and volumes of organic phases (5 ml of chloroform). The complexing form of iron is FeOH<sup>2+</sup>. With a single extraction with chloroform, 98.4% of the iron is recovered a

APA, Harvard, Vancouver, ISO, and other styles

16

Altunay, Nail, and Ramazan Gürkan. "Determination of low levels of Cd(ii) in cosmetic products by spectrophotometry after separation/preconcentration with cloud point extraction." Analytical Methods 8, no. 12 (2016): 2673–83. http://dx.doi.org/10.1039/c5ay03330f.

Full text

Abstract:

In the present study, a simple, low-cost and efficient method was developed for the extraction and preconcentration of Cd(ii) from cosmetic products by using cloud point extraction (CPE) prior to spectrophotometric detection.

APA, Harvard, Vancouver, ISO, and other styles

17

Cheng, Han-Wen, Mark J. Schadt, and Chuan-Jian Zhong. "Titration of gold nanoparticles in phase extraction." Analyst 140, no. 23 (2015): 8023–32. http://dx.doi.org/10.1039/c5an01915j.

Full text

APA, Harvard, Vancouver, ISO, and other styles

18

Muniandy, Yagulan, Sharifah Mohamad, and Muggundha Raoov. "Green and efficient magnetic micro-solid phase extraction utilizing tea waste impregnated with magnetic nanoparticles for the analysis of ibuprofen in water samples by using UV-vis spectrophotometry." RSC Advances 14, no. 17 (2024): 11977–85. http://dx.doi.org/10.1039/d4ra00940a.

Full text

Abstract:

A green method based on magnetic micro-solid phase extraction (MNP-TW-μ-SPE) of tea waste impregnated with magnetic nanoparticles (MNP-TW) developed for the extraction of ibuprofen (IBP) in water samples prior to UV-Vis spectrophotometric analysis.

APA, Harvard, Vancouver, ISO, and other styles

19

Omer, Lazeeza Sattar, and Rasul Jameel Ali. "Extraction-Spectrophotometric Determination of Lidocaine Hydrochloride in Pharmaceuticals." International Journal of Chemistry 9, no. 4 (2017): 49. http://dx.doi.org/10.5539/ijc.v9n4p49.

Full text

Abstract:

Simple, selective and highly detectable spectrophotometric method has been developed and validated for the determination of Lidocaine hydrochloride in standard and commercial solutions .The method is based on the formation of a soluble colored Lidocaine hydrochloride-eriochrome black T ion-pair complex at pH 1.80. The colored complex was extracted quantitatively into chloroform and measured at 508 nm. Beer’s law was obeyed in the concentration range of 0.10-10 mg L -1 with molar absorptivity of 2.3623 x104 L mol-1 cm-1.The limits of detection and quantification were 0.024 mg L -1, and 0.100 mg

APA, Harvard, Vancouver, ISO, and other styles

20

SAKAI, Tadao, Noriko OHNO, Takuo HIGASHI, and Masaya TANAKA. "Extraction-spectrophotometric determination of pilocarpine in ophthalmic solution." Analytical Sciences 1, no. 3 (1985): 275–79. http://dx.doi.org/10.2116/analsci.1.275.

Full text

APA, Harvard, Vancouver, ISO, and other styles

21

Agrawal, Yadvendra K., and Tushar A. Desai. "Liquid-liquid extraction and spectrophotometric determination of zinc." Analyst 110, no. 7 (1985): 815. http://dx.doi.org/10.1039/an9851000815.

Full text

APA, Harvard, Vancouver, ISO, and other styles

22

Golwelker, A., K. S. Patel, and R. K. Mishra. "Extraction–Spectrophotometric Determination of Chromium(VI) with Hydroxyamidines." Bulletin of the Chemical Society of Japan 63, no. 2 (1990): 605–8. http://dx.doi.org/10.1246/bcsj.63.605.

Full text

APA, Harvard, Vancouver, ISO, and other styles

23

Kutyrev, I. M., G. N. Nechepurenko, and Yu A. Gaidukova. "Extraction-spectrophotometric determination of niobium in magnetic alloys." Inorganic Materials 50, no. 14 (2014): 1405–7. http://dx.doi.org/10.1134/s0020168514140088.

Full text

APA, Harvard, Vancouver, ISO, and other styles

24

KOTSUJI, Keiya, Kazumi WAKIYA, and Shigehiko HAYASHI. "Extraction flotation/spectrophotometric determination of zinc in serum." Bunseki kagaku 36, no. 11 (1987): 745–49. http://dx.doi.org/10.2116/bunsekikagaku.36.11_745.

Full text

APA, Harvard, Vancouver, ISO, and other styles

25

Chakraborty, A. R., K. S. Patel, and R. K. Mishra. "Extraction-Spectrophotometric Determination of Tin in Environmental Samples." International Journal of Environmental Analytical Chemistry 45, no. 4 (1991): 229–33. http://dx.doi.org/10.1080/03067319108027388.

Full text

APA, Harvard, Vancouver, ISO, and other styles

26

Rizvi, G. H. "Extraction-spectrophotometric determination of uranium/VI/ with tropolone." Journal of Radioanalytical and Nuclear Chemistry Letters 106, no. 5 (1986): 309–17. http://dx.doi.org/10.1007/bf02162494.

Full text

APA, Harvard, Vancouver, ISO, and other styles

27

Kamburova, Mary. "Extraction-spectrophotometric determination of chromium with Nitrotetrazolium Blue." Mikrochimica Acta 128, no. 3-4 (1998): 177–80. http://dx.doi.org/10.1007/bf01243046.

Full text

APA, Harvard, Vancouver, ISO, and other styles

28

Kormosh, Zh O., I. P. Hunka, and Ya R. Bazel. "Extraction and Spectrophotometric Determination of Diclofenac in Pharmaceuticals." Journal of the Chinese Chemical Society 55, no. 2 (2008): 356–61. http://dx.doi.org/10.1002/jccs.200800052.

Full text

APA, Harvard, Vancouver, ISO, and other styles

29

Savariar, C. P., and K. Vijayan. "Synergic extraction and spectrophotometric determination of titanium(IV)." Talanta 36, no. 10 (1989): 1047–49. http://dx.doi.org/10.1016/0039-9140(89)80192-4.

Full text

APA, Harvard, Vancouver, ISO, and other styles

30

Dawson, M. "Extraction and spectrophotometric determination of cobalt with dithizone." Talanta 37, no. 4 (1990): 443–46. http://dx.doi.org/10.1016/0039-9140(90)80238-b.

Full text

APA, Harvard, Vancouver, ISO, and other styles

31

S., DAS, and K. DAS H. "Extraction-spectrophotometric Determination of Iron using Benzyltriethylammonium Chloride." Journal of Indian Chemical Society Vol. 74, Sep 1997 (1997): 740–41. https://doi.org/10.5281/zenodo.5896555.

Full text

Abstract:

Department of Chemistry, P. U. College (NEHU), Aizawl-796 001 Department of Chemistry, Gauhati University, Guwahati-781 014 <em>Manuscript received 31 January 1996, revised 26 July 1996, accepted 20 September 1996</em> Extraction-spectrophotometric Determination of Iron using Benzyltriethylammonium Chloride.

APA, Harvard, Vancouver, ISO, and other styles

32

SUMON, CHAKRAVARTY, and K. MISHRA R. "Extraction-spectrophotometric Determination of Lead in Environmental Samples." Journal of Indian Chemical Society Vol. 69, Oct 1992 (1992): 701–2. https://doi.org/10.5281/zenodo.6023388.

Full text

Abstract:

School of Studies in Chemistry, Ravishankar University, Raipur-492 010 <em>Manuscript received 11 March 1992, revised 7 July 1992, accepted 22 July 1992</em> Extraction-spectrophotometric Determination of Lead in Environmental Samples.  

APA, Harvard, Vancouver, ISO, and other styles

33

S., K. MAJUMDAR, CHATTOPADHAYAY P., and K. PARIA P. "Extraction and Spectrophotometric Determination of Palladium with Isonitrosothiocamphor." Journal of Indian Chemical Society Vol. 62, Jul 1985 (1985): 544–45. https://doi.org/10.5281/zenodo.6322019.

Full text

Abstract:

Department of Chemistry, North Bengal University, Darjeeling-734 430 <em>Manuscript received 21 December 1984, accepted 3 June 1985</em> A new spectrophotometric method for the determination of palladium(ll) in microgram level has been developed on the basis of the results obtained In the extraction study. Palladium(II) forms a 1: 2 (metal: ligand) complex with lsooitrosothlocamphor (INTC). Quantitative extraction of the complex into chloroform occurs from 5 <em>M</em> hydrochloric acid to \(p\)H 2. Beer's law is obeyed at 450 nm over the palladium concentration range 3-25&n

APA, Harvard, Vancouver, ISO, and other styles

34

Kuliyev, K. A., and N. A. Verdizade. "Extraction-Spectrophotometric Determination of Titanium With 2,6-Dimercapto-4-Isopropylphenol and Hydrophobic Amines." Chemistry Research and Practice 2, no. 1 (2025): 01–11. https://doi.org/10.64030/3065-906x.02.01.05.

Full text

Abstract:

A very simple, rapid and sensitive spectrophotometric procedure for the determination of trace amounts of titanium (IV) is described using 2,6-dimercapto-4-isopropylphenol as a new reagent in the presence of a hydrophobic amine. Of the hydrophobic amines, aniline, N -methylaniline and N, N -dimethylaniline were used. Titanium (IV) was reacted with 2,6-dithiol4-isopropylphenol and hydrophobic amines in a weakly acidic medium at pH 3.3-4.6 using acetate buffer solution to form an orange colored stable complex of 1:2:2 composition with a maximum absorption at 438-446 nm. The complex is formed ins

APA, Harvard, Vancouver, ISO, and other styles

35

Floares (Oarga), Doris, Ileana Cocan, Ersilia Alexa, et al. "Influence of Extraction Methods on the Phytochemical Profile of Sambucus nigra L." Agronomy 13, no. 12 (2023): 3061. http://dx.doi.org/10.3390/agronomy13123061.

Full text

Abstract:

The aim of this work is to evaluate the influence of drying methods, extraction solvent, and extraction methods on the phytochemical profile of Sambucus nigra L. flowers harvested from the western region of Romania. Two drying methods for plant conditioning (room temperature and lyophilization), two extraction solvents (70% ethyl alcohol and water), and three extraction methods (conventional extraction (C), ultrasound-assisted extraction, and microwave extraction) were used. For the evaluation of the phytochemical profile, the following spectrophotometric methods were investigated: total polyp

APA, Harvard, Vancouver, ISO, and other styles

36

Desai, Kirit H., and Yadvendra K. Agrawal. "Extraction, Spectrophotometric and atomic Absorption Spectrophotometric Determination of Tellurium with N-Phenyl Benzohydroxamic Acid." Analytical Letters 20, no. 1 (1987): 11–22. http://dx.doi.org/10.1080/00032718708082232.

Full text

APA, Harvard, Vancouver, ISO, and other styles

37

Agrawal, Yadvendra K., and Nasser Dallali. "Solvent extraction, spectrophotometric, and atomic absorption spectrophotometric determination of beryllium with heterocyclic hydroxamic acids." Microchemical Journal 43, no. 3 (1991): 258–63. http://dx.doi.org/10.1016/s0026-265x(10)80014-1.

Full text

APA, Harvard, Vancouver, ISO, and other styles

38

Kassem, Mohammed A. "Development of a cloud-point extraction method for spectrophotometric nano determination of silver in real samples." Analytical Methods 7, no. 16 (2015): 6747–54. http://dx.doi.org/10.1039/c5ay01094b.

Full text

APA, Harvard, Vancouver, ISO, and other styles

39

Halámek, Emil, and Zbyněk Kobliha. "Investigation of the Conditions of Extraction of Ion-Associates of 3-Quinuclidinyl Benzilate with Acidic Dyes." Collection of Czechoslovak Chemical Communications 58, no. 2 (1993): 315–19. http://dx.doi.org/10.1135/cccc19930315.

Full text

Abstract:

Ion-associates of 3-quinuclidinyl benzilate (BZ) with thirteen acidic dyes were examined after their extraction into chloroform. Based on spectrophotometric measurements, the optimum pH of the aqueous phase was established and the extraction yields, distribution ratios, conditional extraction constants and limits of detection were calculated. Bromocresol green and metanil yellow are suggested as reagents for the analysis of BZ.

APA, Harvard, Vancouver, ISO, and other styles

40

Perak Junaković, Eleonora, Ksenija Šandor, Anja Vujnović, et al. "Spectrophotometric determination of the main polyphenol groups in propolis samples from different regions of Croatia." Veterinarski arhiv 93, no. 2 (2023): 257–70. http://dx.doi.org/10.24099/vet.arhiv.1619.

Full text

Abstract:

Spectrophotometric procedures for the rapid characterization of propolis have been performed on propolis samples from different regions of Croatia. In order to determine the major groups of bioactive compounds in propolis, the following optimised and validated spectrophotometric methods were carried out: the Folin-Ciocalteu method for the content of total phenolics (TPs) and two distinct methods for the content of total flavonoids: aluminium chloride (AlCl3 ) complexation method for total flavones/flavonols (TFFs) and the 2.4-dinitrophenylhydrazine (2.4-DNPH) method for total flavanones/dihydr

APA, Harvard, Vancouver, ISO, and other styles

41

Podolina, Elena Alekseyevna, Minisa Abdullayevna Khanina, Oleg Borisovich Rudakov, and Aleksandr Egorovich Nebolsin. "SPECTROPHOTOMETRIC DETERMINATION OF PHENOL COMPOUNDS FROM HERBS OF CORNFLOWER BLUE." chemistry of plant raw material, no. 3 (February 3, 2019): 145–52. http://dx.doi.org/10.14258/jcprm.2019034675.

Full text

Abstract:

There was studied one- and three-fold solid-liquid extraction of natural phenolic compounds (NPC) (in terms of rutin and tannin) from various morphological parts of blue cornflower (Centaurea cyanus L.) on an ultrasonic device created in the research laboratory of the design bureau of the ISS (Voronezh). The optimal time of solid-liquid extraction at the ultrasonic unit has been determined, taking into account wetting and swelling of vegetable raw materials. The quantitative content of NPC (in terms of rutin and tannin) as a percentage of the total content in raw materials at the first stage i

APA, Harvard, Vancouver, ISO, and other styles

42

Muniz, Renan de Oliveira, Sheila Barbosa Martins, Gláucio Gualtieri Honório, et al. "Total glycerol analysis in biodiesel samples using solid phase extraction coupled with enzymatic-spectrophotometric determination." Analytical Methods 11, no. 6 (2019): 767–73. http://dx.doi.org/10.1039/c8ay02736f.

Full text

APA, Harvard, Vancouver, ISO, and other styles

43

A.Wannas, Fatimah, and Shawket K.Jawad. "Extraction and Determination of Nickel (Ii) Via Cloud Point Method." International Journal of Engineering & Technology 7, no. 4.36 (2018): 725. http://dx.doi.org/10.14419/ijet.v7i4.36.24231.

Full text

Abstract:

Spectrophotometric study for ion pair complex of Ni(II) ion extracted into cloud point extraction larger appear wave length of maximum absorbance was λ=660 nm, for extracted Ni(II) ion as ion pair association ,used laboratory synthesized azo derivative 2-(4-hydroxy phenyl azo)-4-Benzen naphthol(HPAB).The study about Determination the optimum condition for extraction and determination was pH =10 in presence 100 µg Ni(II) in 10 ml aqueous solution ,0.6 mL of Triton x-114 and temperature of heating was 70 c° at heating time equal to 30 minute, stoichiometry shows the ion pair complex extracted wa

APA, Harvard, Vancouver, ISO, and other styles

44

Joginder, Rohilla, K. Baweja R., K. Nair Reshmi, and Kumar Ravi. "Spectrophotometric determination of tungsten(VI) using 3-hydroxy-6-methyl-2-( 4' -tolyl)-4-oxo-4H-1-benzopyran." Journal of Indian Chemical Society Vol. 86, May 2009 (2009): 449–52. https://doi.org/10.5281/zenodo.5810064.

Full text

Abstract:

Department of Chemistry, Kurukshetra University, Kurukshetra-136 119, Haryana, India Department of Chemistry, S. D. College, Ambala Cantt.-133 001, Haryana, India <em>E-mail</em> : jogi001s@gmail.com, jogi001@rediffmail.com <em>Manuscript received 16 April 2008, revised 15 December 2008, accepted 19 December 2008</em> A new, simple, sensitive and selective spectrophotometric method is developed for the trace determination of tungsten. A light yellow (1 : 2) complex of tungsten(VI) is formed with 3-hydroxy-6-methyl-1-(4<em>'</em>-tolyl)-4-oxo-4<em>H</em>-1- benzopyran (HMTB) in perchloric a

APA, Harvard, Vancouver, ISO, and other styles

45

Joginder, Rohilla, and K. Baweja R. "A sensitive, selective and extractive spectrophotometric determination of tungsten( VI) using 3-hydroxy-2-phenyl-4-oxo-4H -1-benzopyran." Journal of Indian Chemical Society Vol. 84, Oct 2007 (2007): 1052–54. https://doi.org/10.5281/zenodo.5827339.

Full text

Abstract:

Department of Chemistry, Kurukshetra University, Kurukshetra-J 36 119, Haryana, India E-mail: jogi001s@ gmail.com; jogi001@reditfmail.com <em>Manuscript received 24 July 2007, accepted 30 July 2007</em> A simple, rapid, sensitive and selective spectrophotometric method for the determination of tungsten(VI) in trace amounts is developed using 3-hydroxy-2-phenyl-4-oxo-4<em>H</em>-1-benzopyran (HPB) as a reagent for the complexation of metal ion and extracting the 1 : 2 (metal : ligand) complex into dichloromethane from 1<em>M</em> HCI solution. It obeys Beer's law in the range 0-2.7&mic

APA, Harvard, Vancouver, ISO, and other styles

46

NIBEDITA, CHAKRABARTI, and K. ROY S. "Extraction of Cadmium(II)-Phenanthroline Complex on Polyurethane Foam using Dithizone as Counter-ion for its Spectrophotometric Determination in Commercial Zinc Oxides." Journal of Indian Chemical Society Vol. 74, Jun 1997 (1997): 474–76. https://doi.org/10.5281/zenodo.5880820.

Full text

Abstract:

Analytical Chemistry Division, Central Glass & Ceramic Research Institute. Calcutta-700 032 <em>Manuscript received 2 December 1994, revised 19 April 1996 accepted 14 May 1996</em> A spectrophotometric method for the determination of Cd<sup>II</sup> in low concentration upto 0.05 <em>µ</em>g ml<sup>-1</sup> after selective extraction of Cd<sup>II</sup> phenanthroline complex on polyurethane foam sorbents using dithizone as counter-ion has been developed. Interferences of metal ions such as Mn<sup>II</sup>, Ni<sup>II</sup>, Co<sup>II</sup>, Fe<sup>II</sup> upto 100 <em>

APA, Harvard, Vancouver, ISO, and other styles

47

Asfaram, Arash, Mehrorang Ghaedi, Alireza Goudarzi, Mustafa Soylak, and Sanaz Mehdizadeh Langroodi. "Magnetic nanoparticle based dispersive micro-solid-phase extraction for the determination of malachite green in water samples: optimized experimental design." New Journal of Chemistry 39, no. 12 (2015): 9813–23. http://dx.doi.org/10.1039/c5nj01730k.

Full text

Abstract:

This paper presents an extraction method based on dispersive-nanoparticle-solid phase microextraction for the preliminary preconcentration and subsequent spectrophotometric determination of trace amounts of malachite green.

APA, Harvard, Vancouver, ISO, and other styles

48

Bağda, Esra, and Mustafa Tüzen. "Determination of zirconium in water, dental materials and artificial saliva after surfactant assisted dispersive ionic liquid based microextraction." RSC Advances 5, no. 130 (2015): 107872–79. http://dx.doi.org/10.1039/c5ra21267g.

Full text

APA, Harvard, Vancouver, ISO, and other styles

49

Xue, Lei, Fang Wei, Guizhen Gao, et al. "Development of an ultrasound-assisted extraction method for the rapid quantification of seed carotenoid content in oilseed rape." Crop and Pasture Science 69, no. 1 (2018): 48. http://dx.doi.org/10.1071/cp16351.

Full text

Abstract:

The selection of cultivars with high carotenoid content represents a novel goal in the genetic improvement of oilseed rape. The successful development of an efficient method for the quantification of carotenoids in oilseed rape is a prerequisite for this breeding initiative. In the present study, ultrasound-assisted extraction was combined with a spectrophotometric method to quantify seed carotenoid levels in oilseed rape. The key variables were optimised as follows: the solvent used was a 1 : 1 (v : v) mixture of petroleum ether and acetone, the solid to solvent concentration was 0.08 g/mL, t

APA, Harvard, Vancouver, ISO, and other styles

50

Swamy, N., K. Basavaiah, and K. B. Vinay. "Extraction-free Spectrophotometric Determination of Pyrantel Pamoate in Pharmaceuticals." Proceedings of the Indian National Science Academy 80, no. 3 (2014): 597. http://dx.doi.org/10.16943/ptinsa/2014/v80i3/47913.

Full text

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!