某选矿厂周边地表水化学需氧量的测定  

Determination of Chemical Oxygen Demand in Surface Water Around a Concentrator

作　　者：王卓 金龙 高正娇 侯雪 李永莉 齐白羽[1] Wang Zhuo;Jin Long;Gao Zhengjiao;Hou Xue;Li Yongli;Qi Baiyu(Northwest Research Institute of Mining and Metallurgy,Baiyin Gansu 730900,China)

机构地区：[1]西北矿冶研究院,甘肃白银730900

出　　处：《山西化工》2024年第7期89-91,共3页Shanxi Chemical Industry

摘　　要：水体中的化学需氧量能够反应出水体受污染的程度。为了测定某选矿厂周边地表水质的化学需氧量,本文通过取样在室内实验室进行了测定,根据判定方法检出限、测定下限、精密度以及准确度等一些参数对样品结果进行了分析。实验数据显示测定出的检出限为3 mg/L,测定下限为12 mg/L,和标准(HJ 828—2017)中已给出的数据进行对比偏小;通过测定低浓度和高浓度两种不同浓度的标准样品,结果显示相对标准偏差分别为2.9%和0.5%,满足方法要求的±10%以内;依据检测结果可判断出该选矿厂周围地表水没有超过排放限值,数据达标。The chemical oxygen demand in a water body can reflect the degree of pollution of the water body.In order to determine the chemical oxygen demand of the surface water quality around a concentrator,the sample results were analyzed according to some parameters such as the detection limit,the lower limit of the determination,the precision and the accuracy of the determination method.Experimental data show that the measured detection limit is 3 mg/L,and the lower limit of the determination is 12 mg/L,which is small compared with the data given in the standard(HJ828-2017).By measuring two different concentrations of standard samples with low concentration and high concentration,the results showed that the relative standard deviation was 2.9%and 0.5%,respectively,meeting the requirements of the method within 10%.According to the test results,it can be judged that the surface water around the concentrator has not exceeded the discharge limit,and the data has reached the standard.

关 键 词：化学需氧量 试亚铁灵指示剂 方法验证 

分 类 号：X832[环境科学与工程—环境工程]