封闭水浴溶样-载碳泡塑吸附-电感耦合等离子体发射光谱法测定矿石中金含量

Determination of Gold Content in Cicc Ore Using a Closed Water Bath Sample-Loaded Carbon Foam Plastic-Inductively Coupled Plasma Optical Emission Spectrometric Method

采用聚碳酸酯溶样瓶进行封闭水浴溶样,溶液加入NH_4HF_2和酒石酸配合其它干扰金属阳离子,加入载碳泡塑振荡吸附金,使用电感耦合等离子体发射光谱仪(ICP-OES)直接测定.方法检出限为0.005 09μg/g,测定上限为150.0μg/g,相对标准偏差(RSD)低于5.77%,消除了Ag、Sb和Fe等阳离子干扰,通过对不同含量金矿石标准物质的测定,取得了较高的准确度,可满足金矿石分析要求.

A polycarbonate sample bottle sealed water bath with digestion solution was used.In the digestion solution NH4HF2and tartaric acid coordinated with other interfering metal cations were added.A loaded carbon foam plastic was added to adsorp gold.After a series of treatment,the sample was determined by inductively coupled plasma optical emission spectrometry(ICP-OES).The detection limit was0.00509μg/g,the determination limit was150μg/g,relative standard deviation(RSD)was less than5.77%,the interference of Ag,Sb,Fe was eliminated.Through the determination of gold ore reference materials in different contents,the results were of high accuracy,so the method can fully meet the requirements the analysis of gold ore.