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目的了解唐山市不同水样中铝的含量情况。方法在唐山市区随机确定水源水、出厂水、末梢水和二次供水采样点;铝的测定按《生活饮用水标准检验方法金属指标》GB/T 5750.6-2006中铝的铬天青S分光光度法进行。结果采集不同类型水样408份,检出112份,检出率27.45%;超标11份,超标率3.0%;检出浓度范围在0.02 mg/L~0.32 mg/L。结论出厂水、末梢水及二次供水的铝含量高于水源水的铝含量,其来源主要是制水常规净化过程中含铝净水剂的残留。
Objective To understand the content of aluminum in different water samples in Tangshan City. Methods The sampling points of water source, ex-factory water, peripheral water and secondary water supply were randomly determined in urban area of Tangshan. The determination of aluminum was based on the “metal index of standard test method for domestic drinking water” GB / T 5750.6-2006 Chromium Azurol S Luminosity method. Results 408 different types of water samples were collected and 112 samples were detected. The detection rate was 27.45%. 11 samples were over-standard and the over-standard rate was 3.0%. The detected concentration ranged from 0.02 mg / L to 0.32 mg / L. Conclusions The aluminum content of the ex-factory water, the peripheral water and the secondary water supply is higher than that of the water source, and the main source of the aluminum content is the residue of the aluminum-containing water purifier in the conventional water purification process.