用无二氧化碳水代替去离子除氧水测定硫化物

Determination of Sulfide with None Carbon Dioxide Contained Water Replacing Deionizing and Deoxidizing Water

在新颁国标中，采用亚甲基蓝光度法测定水和废水中硫化物时，要求用去离子除氧水做为实验用水。在日常工作中，用无二氧化碳水代替去离子除氧水，二者的空白吸光度和标准曲线无显著性差异，且其精密度均小于5％，准确度在93％－103％之间。

The deionizing and deoxidizing water is required by the methylene blue spectrophotometric method in the new national standard to analyze sulfide in water and waste water. The non-carbon dioxide contained water and deionizing and deoxidizing water are used in the comparison experiment of sulfile measurement.The blank photometric absorption and the standard cure of them aren't remarkable discrepancy. The precision of them are all less than 5%, and the accuracy are in 93%-103%.