Standard No.:	GB 11941-1989
English Name:	Standard methods for hygienic examination of sulfide in drinking water sources-Gas chromatography
Chinese Name:	水源水中硫化物卫生检验标准方法 气相色谱法
Chinese Classification:	C51    Environmental sanitation
Professional Classification:	GB    National Standard
Issued by:	Ministry of Health
Issued on:	1989-09-21
Implemented on:	1990-7-1
Status:	valid
Language:	English
File Format:	PDF
Word Count:	1500 words
Price(USD):	45.00
Delivery:	via email in 1~3 business day

本标准规定了用对二乙氨基苯胺分光光度法和碘量法测定水源水中的硫化物。对二乙氨基苯胺分光光度法适用于测定硫化物含量低于1 mg/L的水源水。此法最低检测量为0．5μg，若取50mL水样，则最低检测浓度为0.01 mg/L。亚硫酸盐超过40mg/L，硫代硫酸盐超过20mg几时，对本法有干扰。水样有颜色或者混浊时亦有干扰，应分别采用沉淀分离或曝气分离法消除干扰。碘量法适用于测定硫化物含量大于1 mg/L的水源水。