測(cè)試對(duì)象：巖石、土壤等粉末樣品（ >200目 ）
測(cè)試周期：30-45個(gè)工作日，可提供樣品測(cè)試加急服務(wù)，加急樣品周期5-10個(gè)工作日。全套主微量元素分析可同步進(jìn)行，周期仍為30-45個(gè)工作日。
送樣要求：1、樣品量需約3g，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)：保證樣品無(wú)污染，標(biāo)樣和重復(fù)樣在允許誤差范圍內(nèi)。
方法描述：
8.1全巖主量元素含量分析
燒失量通過(guò)減重法測(cè)定：
燒失量計(jì)算：LOI=100*(m0+m1-m2)/m1
m0 :坩堝質(zhì)量； m1:樣品質(zhì)量；m2:1000℃燒失后殘留樣品+空坩堝質(zhì)量。
熔片：
全巖主量元素分析的樣品前處理采用熔融法制作玻璃熔片，助熔劑為四硼酸鋰-偏硼酸鋰-氟化鋰（45:10:5），氧化劑為，脫模劑為溴化鋰。熔融溫度1050℃、熔樣時(shí)長(zhǎng)15min。
| 稱量試劑 | 稱量質(zhì)量 |
| 固體溶劑（45Li2B4O7 : 10LiBO2 : 5LiF） | 6.0000±0.0002 g |
| （NH4NO3） | 0.30±0.001 |
| 樣品 | 0.6000±0.0001 g |
全巖主量元素分析儀器使用日本理學(xué)（Rigaku）生產(chǎn)的 ZSX Primus Ⅱ型波長(zhǎng)色散X射線熒光光譜儀（XRF），4.0kW端窗銠靶X射線光管，測(cè)試條件為電壓：50kV，電流：60mA，主量各元素分析譜線均為Kα，標(biāo)準(zhǔn)曲線使用國(guó)家標(biāo)準(zhǔn)物質(zhì)巖石系列GBW07101-14、土壤系列：GSS07401-08、水系沉積物系列：GBW07302-12建立。數(shù)據(jù)校正采用理論α系數(shù)法，測(cè)試相對(duì)標(biāo)準(zhǔn)偏差（RSD）＜2%。
8.2 Major element analyses of whole rock
The sample pretreatment of whole rock major element analysis was made by melting method. The flux is a mixture of lithium tetraborate, lithium metaborate and lithium fluoride (45:10:5), Ammonium nitrate and lithium bromide were used as oxidant and release agent respectively，The melting temperature was 1050 ℃ and the melting time was 15min.
| Weighing reagents | Weighing weight |
| 45Li2B4O7:10LiBO2:5LiF | 6.0000±0.0002 g |
| NH4NO3 | 0.30±0.001 |
| sample | 0.6000±0.0001 g |
Zsx Primus II wavelength dispersive X-ray fluorescence spectrometer (XRF) produced by RIGAKU, Japan was used for the analysis of major elements in the whole rock, The X-ray tube is a 4.0Kw end window Rh target, The test conditions are voltage: 50kV, current: 60mA, All major element analysis lines are kα, The standard curve uses the national standard material, rock standard sample: GBW07101-14, soil standard sample: GBW07401-08, stream sediment standard sample: GBW07302-12. The data were corrected by theoretical α coefficient method, The relative standard deviation (RSD) is less than 2%.
