水基钻井岩屑样品快速消解测定六种重金属元素  

Determination of Six Heavy Metals by Rapid Digestion of Water-based Drilling Cuttings Samples

作　　者：孙峰[1] 夏嵩 李惠[1] 刘斯琪 徐炳科[1] 谢倩雯[1] 史春艳[3] Sun Feng;Xia Song;Li Hui;Liu Siqi;Xu Bingke;Xie Qianwen;Shi Chunyan(Safety,Environmental Protection and Technical Supervision Research Institute of PetroChina Southwest Oil and Gas Field;Water and Environmental Protection Research Institute of PetroChina Daqing Oilfield;Sichuan Northeast Gas Mine of PetroChina Southwest Oil and Gas Field)

机构地区：[1]中国石油西南油气田公司安全环保与技术监督研究院 [2]中国石油大庆油田水务环保研究院 [3]中国石油西南油气田公司川东北气矿

出　　处：《油气田环境保护》2025年第1期39-44,共6页Environmental Protection of Oil & Gas Fields

摘　　要：通过对水基钻井岩屑(简称水基钻屑)的理化指标进行分析,确定水基钻井岩屑样品消解的关键点。针对水基钻井岩屑的成分特征对消解过程中氢氟酸破硅条件、氧化性酸匹配、消解时间和消解温度进行优化,形成一套低耗酸量、低温、快速消解水基钻井岩屑样品的方法。该方法测定Cu、Zn、Pb、Cd、Ni、Cr元素检出限为0.01~3.6 mg/kg,相对标准偏差为1.3%~8.6%,加标回收率为86.4%~104.6%。此方法可用于各类型的水基钻井岩屑及土壤中重金属的检测。By analyzing the physicochemical indicators of water-based drilling cuttings(referred to as water-based cuttings),this study identifies the key points for the digestion of water-based drilling cuttings samples.According to the composition characteristics of water-based cuttings,hydrofluoric acid breaking conditions,oxidizing acid matching,digestion time and digestion temperature were optimized,and a set of low acid consumption,low temperature and rapid digestion method for water-based cuttings was formed.The detection limits of Cu,Zn,Pb,Cd,Ni and Cr were 0.01-3.6 mg/kg,the relative standard deviation was 1.3%-8.6%,the recovery rate was 86.4%-104.6%.This method can be applied to the detection of heavy metals in various types of water-based cuttings and soil.

关 键 词：水基钻井岩屑 成分特征 重金属 消解 

分 类 号：X830.2[环境科学与工程—环境工程]