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--- 美国SPEX CLP项目标液 ---
元素:21215mg/L: Cl
3000mg/L: Ca
2500mg/L: Fe, Na
2000mg/L: C
1000mg/L: Al, K, Mg, P, S
20mg/L: Mo, Ti
基体:5% HNO3/tr HF
体积:125mL
编号:CL-INT-A1
用途:Claritas PPT 级,电感耦合等离子体质谱仪(ICP-MS)分析用元素标液。EPA合约实验室CLP项目标液。
证书:每份标液都附有一份内容详细的标准物质证书,证书报告标液中多至68种痕量杂质元素含量实际测量结果。
溯源:美国NIST SRM (Traceable by NIST SRM)
**应用参考 · INSTRUCTION**
每次测试开始和结束验证干扰和背景校正因子,另外每20个样品必需进行检测。标液CL-INT-A1,稀释20倍,为溶液A,标液CL-INT-A1稀释20倍再加标液CL-INT-B1稀释100倍后混合,为溶液AB。溶液A和溶液AB用于见的干扰检测。一旦两种溶液配制好,需连续分析,从溶液A开始。
CLP-M/6020/SW-846 Standards for ICP-MS
For verification of inter-element and background correction factors at the beginning and the end of each analysis run. In addition, a verification must be done after every 20th sample. Two solutions are required for the most common interference check: Solution A, the interferents alone (CL-INT-A1) and Solution AB, a combination of interferents (CL-INT-A1) and analytes (CL-INT-B1). Solution A is prepared by diluting CL-INT-A1 20-fold. Solution AB is prepared by diluting CL-INT-A1 20-fold and CL-INT-B1 100-fold; for example, 5 mL of CL-INT-A1 and 1 mL of CL-INT-B1 into a 100 mL volumetric flask, brought to volume with a matrix blank . Once prepared, the solutions should be analyzed consecutively, starting with Solution A.
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