高分辨连续光源—火焰原子吸收仪测定污水厂污泥中的7种重金属  

Determination of Seven Kinds of Metal Elements in Sludge in Wastewater Treatment Plant by Continuous Light Source-Flame Atomic Absorption Spectrometer

作　　者：马振 纪延钰 管蕾 修宗楷 Ma Zhen;Ji Yanyu;Guan Lei;Xiu Zongkai(Qingdao Drainage Operation Service Center,Qingdao 266000,Shandong,China;Qingdao Drainage Co.,Ltd,Qingdao 266000,Shandong,China)

机构地区：[1]青岛市排水运营服务中心,山东青岛266000 [2]青岛排水有限公司,山东青岛266000

出　　处：《绿色科技》2025年第2期144-147,共4页Journal of Green Science and Technology

摘　　要：建立了高分辨连续光源—火焰原子吸收仪测定城镇污水厂污泥中铜、锌、铅、铬、镍、锰、钾的方法。移取样品0.20 g左右,加4.00 mL硝酸和2.00 mL双氧水,进行微波消解。使用高分辨连续光源—火焰原子吸收仪对铜、锌、铅、铬、镍、锰、钾进行测定。方法标准曲线相关系数在0.9992~0.9999,检出限在在0.3~3.2μg/L。检测土壤标准物质GBW07428以验证方法的准确度和精密度,测定结果的相对误差在0.73%~3.23%,测定结果均在标准差允许范围之内,测定结果的RSD在0.7%~2.6%。该方法简单、高效,结果准确度高,重现性好,适用于污水处理厂污泥中重金属铜、锌、铅、铬、镍、锰、钾的检测。A method for determination of copper,zinc,lead,chromium,nickel,manganese and potassium in sludge by microwave digestion high resolution continuous light source-flame atomic absorption spectrometer was developed.Sludge(with 4 mL HNO_(3) and 2 mL H_(2)O_(2))was digested with microwave.Copper,zinc,lead,chromium,nickel,manganese and potassium were determined by high resolution continuous light source-flame atomic absorption spectrometer.The correlation coefficient of methods was al1 between 0.9992 and 0.9999 and the detection limit was between 0.3 and 3.2μg/L.The soil standard material GBW07428 was detected to verify the accuracy and precision of the method.The relative error of the determination results was between 0.73%to 3.23%.The determination results were within the allowable range of standard deviation,and the RSD of the determination results was between 0.7%to 2.6%.The method is simple,efficient,accurate and reproducible,which is suitable for the detection of heavy metals and such as copper,zinc,lead,chromium,nickel,manganese and potassium in sewage sludge.

关 键 词：高分辨连续光源—火焰原子吸收 重金属 污泥 

分 类 号：X52[环境科学与工程—环境工程]