QC/T XXXXX—XXXX
I 六价铬的检测方法 QC/T XXXXX—XXXX
II 目 次
前言 ............................................................................... III
引言 ................................................................................ IV
1 范围 .............................................................................. 1
2 规范性引用文件 .................................................................... 1
3 X射线荧光光谱法 ................................................................... 1
3.1 原理 .......................................................................... 1
3.2 试剂和材料 .................................................................... 1
3.3 仪器和设备 .................................................................... 2
3.4 样品制备 ...................................................................... 2
3.5 分析步骤 ...................................................................... 2
3.6 结果分析 ...................................................................... 3
4 金属防腐镀层中六价铬定性试验 ...................................................... 3
4.1 原理 .......................................................................... 3
4.2 试剂和材料 .................................................................... 4
4.3 仪器和设备 .................................................................... 4
4.4 样品制备 ...................................................................... 4
4.5 试验 .......................................................................... 4
5 金属防腐镀层中六价铬含量测定 ...................................................... 6
5.1 原理 .......................................................................... 6
5.2 试剂和材料 .................................................................... 6
5.3 仪器和设备 .................................................................... 6
5.4 样品制备 ...................................................................... 6
5.5 分析步骤 ...................................................................... 6
5.6 结果计算 ...................................................................... 7
5.7 精密度 ........................................................................ 8
6 聚合物材料和电子材料中六价铬含量测定 .............................................. 8
6.1 原理 .......................................................................... 8
6.2 试剂和材料 .................................................................... 8
6.3 仪器和设备 .................................................................... 9
6.4 样品制备 ...................................................................... 9
6.5 分析步骤 ...................................................................... 9
6.6 结果计算 ..................................................................... 10
6.7 精密度 ....................................................................... 11
7 皮革材料中六价铬含量测定 ......................................................... 11
7.1 原理 ......................................................................... 11
7.2 试剂和材料 ................................................................... 11
7.3 仪器和设备 ................................................................... 11 QC/T XXXXX—XXXX
III 7.4 样品制备 ..................................................................... 12
7.5 分析步骤 ..................................................................... 12
7.6 结果计算 ..................................................................... 13
7.7 回收率和检出限 ............................................................... 14
8 试验报告 ......................................................................... 14
附录A（资料性附录） 紧固件镀层表面积计算方法 ....................................... 15
A.1 紧固件表面积计算公式 ......................................................... 15
A.2 螺栓、螺母表面积计算数据 ..................................................... 15
附录B（规范性附录） 聚合物材料和电子材料中六价铬含量测定方法回收率的测定和检出限的确定 .................................................................................... 18
B.1 回收率的测定 ................................................................. 18
B.2 检出限的确定 ................................................................. 18
附录C（规范性附录） 皮革材料中挥发物含量的测定 ..................................... 20
C.1 样品制备 ..................................................................... 20
C.2 分析步骤 ..................................................................... 20
C.3 结果计算 ..................................................................... 20
C.4 精密度 ....................................................................... 20
附录D（规范性附录） 皮革材料中六价铬含量测定方法回收率的测定 ....................... 21
D.1 基质对回收率的影响 ........................................................... 21
D.2 反相材料（RP）对回收率的影响 ................................................. 21
