REINVESTIGATION OF PHENOL AS A SPECTROPHOTOMETRIC REAGENT FOR THE DETERMINATION OF NITRATE-NITROGEN

被引：10

作者：

ELTONBOTT, RR

机构：

来源：

ANALYTICA CHIMICA ACTA | 1979年 / 108卷 / JUL期

关键词：

D O I：

10.1016/S0003-2670(01)93067-3

中图分类号：

O65 [分析化学];

学科分类号：

070302 [分析化学]; 081704 [应用化学];

摘要：

The advantages of phenol over isomers of dimethylphenol in the determination of nitrate-nitrogen are described. Linear calibration graphs are obtained for the ranges 0-100, 0-400 and 0-20 μg mll-1 for nitrate-nitrogen; these ranges are suitable for analyses of plant materials, soil extracts and waters. For spiked samples, recoveries of 97.7 to 104.3% were obtained with relative standard deviations of 2.0 to 6.7%. Tolerance to chloride is good, and interferences by nitrite and hydrogen peroxide are easily controlled. A modified Markham microstill for use in automatic analyser systems is described. © 1979.

引用

页码：285 / 291

页数：7

共 17 条

[1]

Breslow R., 1969, ORGANIC REACTION MEC, P148

[2]

A study of the phenolsulphonic acid method for the determination of nitrates in water I The composition of the reagent and of the reaction product [J].