GB/T 16658-2007 in English
VALIDDetermination of chromium cadium and lead in coal
- Issued on:2007-11-01
- Implemented on:2008-06-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
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《GB/T 16658-2007煤中铬、镉、铅的测定方法》由TC42(全国煤炭标准化技术委员会)归口,TC42SC1(全国煤炭标准化技术委员会煤炭检测分会)执行,主管部门为中国煤炭工业协会。
本标准代替GB/T 16658-1996《煤中铬、镉、铅的测定方法》。
本标准规定了测定煤中铬、镉、铅的试剂、仪器设备、试验步骤、结果计算及方法精密度。
本标准适用于褐煤、烟煤和无烟煤。
本标准与GB/T 16658-1996相比,主要变化如下:
―――镉、铅混合标准工作溶液由50μg/mL 改为20μg/mL;
―――铬标准工作溶液浓度由50μg/mL改为20μg/mL;
Scope
This standard specifies the reagents, instruments and equipment, test procedures, result calculation and method precision for the determination of chromium, cadmium and lead in coal. This standard applies to lignite, bituminous coal and anthracite.

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