摘要
针对废水中硫化物的特点,本文按照《水质硫化物的测定碘量法》(HJ/T60-2000)开展测定硫化物的实验,探讨了硫酸和盐酸对实验结果的影响,明确了空白试验、加药次序、标准溶液配制和滴定终点等容易忽视的步骤。试验表明:应加入盐酸对样品进行酸化,空白实验中必须使用滤纸,在反应过程中要严格控制加药次序,注意观察滴定终点。
Aiming at the characteristics of sulfides in wastewater , according to water quality determination of sulfides -iodometric method （HJ/T60-2000）, the influence of sulfuric acid and hydrochloric acid on results was discussed , steps were cleared that easy to overlook such as the blank assay , dosing sequence , preparation of standard solution and titration end point.The test showed that the acidification of samples was necessary with hydrochloric acid , the filter paper must be used in blank test , the dosing sequence in the reaction process should be controlled strictly , and titration end point was observed carefully.
出处
《广州化工》
CAS
2014年第14期132-133,139,共3页
GuangZhou Chemical Industry
基金
国家科技支撑计划课题(No:2012BAC02B04)
关键词
碘量法
废水
硫化物
测定
iodometric method
wastewater
sulfides
determination
