DETERMINATION OF NITRITE ION IN UNUSED CUTTING FLUIDS AND CUTTING OILS USING A GAS-SENSING ELECTRODE METHOD

被引：10

作者：

CLARK, FRS

MACPHERSON, HB

机构：

[1] Product Safety Laboratory, Department of Consumer and Corporate Affairs, Ottawa, Ont. K1A 0C9, Tunney's Pasture

[2] National Research Council of Canada, Chemistry Division, Analytical Section, Ottawa

来源：

ANALYST | 1979年 / 104卷 / 1237期

关键词：

Cutting fluids; Cutting oils; Gas-sensing electrode; Nitrite-ion determination; Nitrogen oxide electrode;

D O I：

10.1039/an9790400358

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Modifications of the Orion NOx gas-sensing electrode method that were made to determine nitrite ion in unused cutting fluids and cutting oils are described. Detection limits for both types of lubricants of the order of 15 μg g-1 of NO2- ion were obtained. Previous analysis of six cutting fluids, collected in the Ottawa region and analysed by spectrophotometry, confirmed the presence of high levels of nitrite ion and showed fair agreement between results. Analysis of six other cutting fluids and 20 cutting oils collected in the same region showed the presence of nitrite ion in only three instances. The operation of the electrode, interferences, the use of standard-addition and -subtraction methods and the possibility of applying this method to used cutting lubricants are discussed.

引用

页码：358 / 366

页数：9

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