8 kinds of heavy metals such as lead and cadmium in the quality control substances of offshore sediments
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11 kinds of heavy metal quality control substances such as lead and cadmium in corn meal
RMT024 | 40g/瓶
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There are 11 kinds of heavy metal quality control substances in wheat flour, such as lead and cadmium
RMT023 | 40g/瓶
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22 kinds of heavy metal quality control substances in solid waste
RMU006c | 40g/瓶
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17 kinds of heavy metal (leachate) quality control substances in solid waste
RMU100c | 1.5kg/瓶
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Quality control substances for 12 kinds of heavy metals (leaching) in industrial solid waste
RMU253 | 1.5kg/瓶
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Quality control substances of lead, cadmium, arsenic and mercury in paste cosmetics
RMS012 | 5g/支(2支/套)
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Quality control substances of lead, cadmium, arsenic and mercury in paste cosmetics
RMS011 | 5g/支(2支/套)
8 kinds of heavy metals such as lead and cadmium in the quality control substances of offshore sediments
GB17378.5-2007
总铅(Pb)
54.9
6.5
mg/kg
总镉(Cd)
0.310
0.033
mg/kg
93.1
9.8
0.250
0.027
10.3
1.0
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2. 加入5mL HF+3mL HClO₄→180℃消解至白烟冒尽
3. 定容至25mL(1% HNO₃介质)
• 标准曲线法定量(r≥0.995)
2. 铬检测需用高氯酸氧化至六价态后测定
3. 有机质含量>5%的样品需增加双氧水消解步骤
4. 所有器皿需经10%硝酸浸泡24小时去污染
5. 结果报告需注明检测方法及定量限
以上信息仅供参考,请以相应标准的原文为准!