离子色谱法测定复杂氮硫化物

Ion Chromatography Determination of Various Compounds Containing N-S Bonds

建立了复杂氮硫化物的离子色谱分析方法。在选定的色谱条件下能很好地分离多种高价及低价Ｎ－Ｓ化合物，尤其是能分析三价离子氨基三磺酸根。线性范围分别为：羟胺二磺酸根（０．０９８～６．９６０）×１０－４ｍｏｌ／Ｌ；氨基二磺酸根（０．１２５～１．５０９）×１０－４ｍｏｌ／Ｌ；氨基三磺酸根（０．３８０～３．０４６）×１０－４ｍｏｌ／Ｌ；羟胺一磺酸根（０．０２７～１．２４３）×１０－４ｍｏｌ／Ｌ；氨基一磺酸根（０．０１６～１．１６８）×１０－４ｍｏｌ／Ｌ。实验表明该法具有分析时间短、线性范围宽。

An ion _ chromatographic procedure is described for the determination of compounds containing N-S bonds. Under optimal conditions, satisfactory separation of these compounds can be achieved, even for the triple _ charged anion nitrilotrisulfonate. The linear ranges as follows:( 0.098～6.960)×10-4 mol·L 1 for hydroxylamine disulfonate, (0.125～1.509)×10-4 mol·L-1 for iminodisulfonate,( 0.380～3.046)×10-4 mol·L-1 for nitrilotrisulfonate,( 0.027～1.243)×10-4 mol·L-1 for hydro_ xylamine monosulfonate, and(0.016～1.168)×10-4 mol·L-1 for sulfamate. The method is rapid, sensitive and accurate.