测试对象：岩石、土壤粉末样品、天然水样、消解溶液、高纯物质杂质等样品

测试周期：30-45个工作日，全套主微量元素分析可同步进行，周期30-45个工作日。可提供样品测试加急服务，加急样品最短周期20个工作日。

送样要求：1、样品量需约2 g，粒度≥200 目，请务必逐个自查，标准为将样品粉末捻在手心无明显颗粒感；2、编号清晰，纸袋折叠封装；3、请勿用订书机封订；4、塑料袋包装或样品洒出的退回。

完成标准：前处理在超净室100级超净台内进行，保证监测空白及样品无污染，标样和重复样在允许误差范围内。

方法描述：
7.1全岩微量元素含量分析

7.2 Trace element analyses of whole rock

Trace element analysis of whole rock were conducted on Agilent 7700e ICP-MS at the Wuhan SampleSolution Analytical Technology Co., Ltd., Wuhan, China. The detailed sample-digesting procedure was as follows: (1) Sample powder (200 mesh) were placed in an oven at 105 ℃ for drying of 12 hours; (2) 50 mg sample powder was accurately weighed and placed in a Teflon bomb; (3) 1 ml HNO₃ ａnd 1 ml HF were slowly added into the Teflon bomb; (4) Teflon bomb was putted in a stainless steel pressure jacket and heated to 190 ℃ in an oven for >24 hours; (5) After cooling, the Teflon bomb was opened and placed on a hotplate at 140 ℃ and evaporated to incipient dryness, and then 1 ml HNO₃ was added and evaporated to dryness again; (6) 1 ml of HNO₃, 1 ml of MQ water and 1 ml internal standard solution of 1ppm In were added, and the Teflon bomb was resealed and placed in the oven at 190 ℃ for >12 hours; (7) The final solution was transferred to a polyethylene bottle and diluted to 100 g by the addition of 2% HNO₃.