磺胺硝基DAF试剂间接测定水中磷酸盐离子

IF 0.7 Q4 CHEMISTRY, ANALYTICAL

Methods and Objects of Chemical Analysis Pub Date : 2021-01-01 DOI:10.17721/moca.2021.147-152

S. Kel’ina, O. G. Nevinsky

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引用次数: 0

摘要

提出了一种间接测定天然废水和处理废水中磷酸盐离子的方法，该方法是基于钼磷酸盐配合物(MFC)的形成，通过乙酸异戊酯萃取将其从过量未结合的钼酸盐中分离出来，将MFC萃取到弱碱性水相中，破坏MFC，并用磺胺硝基DAF试剂光度法测定等量的钼酸盐离子。该技术可测定0.02至0.43 mg - dm-3的磷酸盐离子(以磷计)。

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Indirect Determination of Phosphate-ions in Waters with the Reagent Sulfonitrazo DAF

An indirect method for the determination of phosphate ions in natural and treated wastewater is proposed, which is based on the formation of molybdophosphate complex (MFC), separating it from excess unbound molybdate by isoamyl acetate extraction, extraction of MFC into weakly alkaline aqueous phase, destruction of MFC and photometric determination of the equivalent amount of molybdate ions with the sulfonitrazo DAF reagent. The technique allows to determine from 0.02 to 0.43 mg dm-3 of phosphate ion (in terms of phosphorus).

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来源期刊

Methods and Objects of Chemical Analysis CHEMISTRY, ANALYTICAL-

CiteScore

1.00

自引率

14.30%

发文量

期刊介绍： The journal "Methods and objects of chemical analysis" is peer-review journal and publishes original articles of theoretical and experimental analysis on topical issues and bio-analytical chemistry, chemical and pharmaceutical analysis, as well as chemical metrology. Submitted works shall cover the results of completed studies and shall make scientific contributions to the relevant area of expertise. The journal publishes review articles, research articles and articles related to latest developments of analytical instrumentations.