火焰原子吸收光谱法测定煤及煤基活性炭中微量金属元素  

FAAS Determination of Microamounts of Metal Elements in Coal and Coal-based Activated Carbon

作　　者：王建程 

机构地区：[1]宁夏产品质量监督检验所,银川750001

出　　处：《理化检验（化学分册）》2009年第1期96-97,100,共3页Physical Testing and Chemical Analysis(Part B:Chemical Analysis)

摘　　要：提出了火焰原子吸收光谱法测定煤及煤基活性炭样品中微量元素铜、锌、锰、铁、钙、镁、锡的方法,煤及煤基活性炭样品研磨成粉末状后,按GB 212-1991标准方法规定的灰化条件将样品灰化,灰化样品用高氯酸、氢氟酸溶解后,再经盐酸(1+1)溶液溶解,过滤,按仪器工作条件测定。按标准加入法做回收试验,测得回收率在96.7%～100.9%之间。对7元素分别做精密度试验,求得相对标准偏差(n=6)均小于1%。A method for determination of 7 metal elements （i. e. , copper, zinc, manganese, iron, calcium, magnesium and tin） of micro amounts in coal and coal-based activated carbon by FAAS was proposed. The sample of coal or coal-based activated carbon was pulverized and ashed as described in GB/T 212- 1991. The ashed sample was treated with HClO4 and HF, evaporated to near dryness and then dissolved with HCI （ 1 ＋ 1）. The above mentioned metal elements in hydrochloric acid solution were determined by FAAS according to the working conditions of instrument as described. Tests for precision and recovery were performed, giving values of RSD＇s （n= 6） for all the 7 elements less than 1%, and values of recovery in the range of 96.7% to 100. 9%.

关 键 词：火焰原子吸收光谱法 煤基活性炭 原料煤 微量元素 

分 类 号：O657.31[理学—分析化学]