測(cè)試對(duì)象：巖石、土壤粉末樣品、天然水樣、消解溶液、高純物質(zhì)雜質(zhì)等樣品

測(cè)試周期：30-45個(gè)工作日，全套主微量元素分析可同步進(jìn)行，周期30-45個(gè)工作日。可提供樣品測(cè)試加急服務(wù)，加急樣品最短周期20個(gè)工作日。

送樣要求：1、樣品量需約2 g，粒度≥200 目，請(qǐng)務(wù)必逐個(gè)自查，標(biāo)準(zhǔn)為將樣品粉末捻在手心無(wú)明顯顆粒感；2、編號(hào)清晰，紙袋折疊封裝；3、請(qǐng)勿用訂書(shū)機(jī)封訂；4、塑料袋包裝或樣品灑出的退回。

完成標(biāo)準(zhǔn)：前處理在超凈室100級(jí)超凈臺(tái)內(nèi)進(jìn)行，保證監(jiān)測(cè)空白及樣品無(wú)污染，標(biāo)樣和重復(fù)樣在允許誤差范圍內(nèi)。

方法描述：
7.1全巖微量元素含量分析

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.