酸性土壤有效态成分分析质控样品/LY/T 1239-1999 Quality control samples for analysis of effective components in acidic soil
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酸性土壤有效态成分分析质控样品/LY/T 1239-1999 Quality control samples for analysis of effective components in acidic soil
BWS0439-2016 | 200g
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酸性土壤有效态成分分析质控样品/LY/T 1239-1999 Quality control samples for analysis of effective components in acidic soil
SHAM_233876 | 200g
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酸性土壤有效态成分分析质控样品/LY/T 1239-1999 Quality control samples for analysis of effective components in acidic soil
SHAM_233882 | 200g
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酸性土壤有效态成分分析质控样品/LY/T 1239-1999 Quality control samples for analysis of effective components in acidic soil
BWS0438-2016 | 200g
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酸性土壤有效态成分分析质控样品/LY/T 1239-1999 Quality control samples for analysis of effective components in acidic soil
BWS0437-2016 | 200g
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碱性土壤有效态成分分析质控样品/LY/T 1239-1999 Quality control samples for analysis of available components in alkaline soil
BWS0434-2016 | 200g
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碱性土壤有效态成分分析质控样品/LY/T 1239-1999 Quality control samples for analysis of available components in alkaline soil
SHAM_234463 | 200g
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锌:检出限0.10 mg/kg,定量限0.30 mg/kg;
铅:检出限0.20 mg/kg,定量限0.60 mg/kg;
镉:检出限0.01 mg/kg,定量限0.03 mg/kg。
2. 有效态成分含量应覆盖待测样品浓度范围;
3. 使用前需充分混匀,避免结块或分层;
4. 储存条件:避光、密封,温度≤4℃。
2. 酸提取:按比例加入提取剂,震荡2小时;
3. 离心过滤:3000 rpm离心10分钟,取上清液;
4. 仪器分析:校准曲线法进行定量,平行测定3次。
2. 若土壤含有机质较高,需增加氧化步骤;
3. 提取液需现配现用,避免长时间存放;
4. 数据修约按GB/T 8170执行。
以上信息仅供参考,请以相应标准的原文为准!