Simultaneous determination of total nitrogen, phosphorus and sulphur by means of microwave digestion and ion chromatography

被引：44
作者：
Colina, M
Gardiner, PHE
机构：
[1] Sheffield Hallam Univ, Div Chem, Sch Sci & Math, Sheffield S1 1WB, S Yorkshire, England
[2] Univ Zulia, Fac Ciencias, Lab Quim Ambiental, Maracaibo 4011, Venezuela
来源：
JOURNAL OF CHROMATOGRAPHY A | 1999年 / 847卷 / 1-2期
关键词：
nitrogen; phosphorus; inorganic anions; sulphur;
D O I：
10.1016/S0021-9673(99)00024-2
中图分类号：
Q5 [生物化学];
学科分类号：
071010 ; 081704 ;
摘要：
A method for the oxidation of nitrogen, phosphorus and sulphur to nitrate, phosphate and sulphate ions using 22% (v/v) hydrogen peroxide and closed-vessel microwave assisted digestion in two stages is described. Solutions of a variety of nitrogen-, phosphorus- and sulphur-containing compounds with formic acid added to prevent hydrolysis were used to test the efficiency of the procedure. The products of oxidation were determined by ion chromatography. Good recoveries of nitrogen, phosphorus and sulphur were obtained. The results for the NIST reference materials, oyster tissue and Buffalo River sediments agree well with the certified values. (C) 1999 Elsevier Science B.V. All rights reserved.
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页码：285 / 290
页数：6
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