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测试项目：全岩微量元素分析

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

全岩微量元素含量在武汉上谱分析科技有限责任公司利用Agilent 7700e ICP-MS分析完成。用于ICP-MS分析的样品处理如下：(1)将200目样品置于105 ℃烘箱中烘干12小时； (2)准确称取粉末样品50 mg置于Teflon溶样弹中；(3)先后依次缓慢加入1 ml高纯HNO₃和1 ml高纯HF；(4)将Teflon溶样弹放入钢套，拧紧后置于190℃烘箱中加热24小时以上；(5)待溶样弹冷却，开盖后置于140℃电热板上蒸干，然后加入1 ml HNO₃并再次蒸干；(6)加入1 ml高纯HNO₃、1 ml MQ水和1ml内标In（浓度为1 ppm），再次将Teflon溶样弹放入钢套，拧紧后置于190℃烘箱中加热12小时以上；(7)将溶液转入聚乙烯料瓶中，并用2% HNO₃稀释至100 g以备ICP-MS测试。

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.