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为了解南京市售大米重金属含量,于2010年12月,在南京市6城区(鼓楼、玄武、白下、建邺、雨花、栖霞)随机选取大型超市和粮油店各1个,每个采样点选取几种不同产地的大米样品,共37个样品。样品磨碎,过100目筛,储于塑料瓶中密封备用。样品经硝酸-高氯酸(4+1)消解,采用TAS-986石墨炉原子吸收分光光度计(北京普析公司)测定Pb、Cd含量,插入国家标
In order to understand the content of heavy metals in Nanjing market, in December 2010, a large supermarket and a grain and oil store were randomly selected in 6 districts of Nanjing (Gulou, Xuanwu, Baixia, Jianli, Yuhua and Qixia), and each sampling point Select several different areas of rice samples, a total of 37 samples. Samples were ground, over 100 mesh sieve, stored in plastic bottles sealed spare. Samples were nitric acid - perchloric acid (4 +1) digestion, using TAS-986 Graphite Furnace Atomic Absorption Spectrophotometer (Beijing Pu analysis company) Determination of Pb and Cd content, into the national standard