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您正在浏览的产品:甲醇中苯酚和双酚A混标溶液(GBT 41531-2022),100μg/mL
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2. 提取液离心过滤(0.22μm滤膜)
3. 滤液直接进样分析
流动相:甲醇/0.1%氨水溶液梯度洗脱
流速:0.3mL/min
2. 回收率范围:苯酚80%-110%,双酚A 75%-105%
2. 准确称取1.0g(精确至0.01g)试样
2. 40℃超声提取30min
3. 冷却后8000r/min离心5min
2. 按标准梯度程序进行HPLC-MS/MS分析
3. 采用多反应监测模式(MRM)定量
2. 需用甲醇逐级稀释至工作浓度(0.5-50μg/L)
3. 现用现配,避免双酚A在塑料容器中吸附
2. 实验室禁用含双酚A的试剂瓶
3. 样品处理全程佩戴丁腈手套
X = (c × V × f) / m
X:含量(mg/kg),c:测定浓度(μg/L)
V:定容体积(mL),f:稀释因子,m:样品质量(g)
以上信息仅供参考,请以相应标准的原文为准!