聚磺岩屑和还原土中钡的毒性物质含量鉴别方法研究  

Research on the identification method of barium toxic substance content of polysulfonate cuttings and reducing soils

作　　者：王菲 赵彤 杨金忠[1,2] 刘宏博 杨玉飞[1,2] WANG Fei;ZHAO Tong;YANG Jinzhong;LIU Hongbo;YANG Yufei(State Key Laboratory of Environmental Criteria and Risk Assessment,Chinese Research Academy of Environmental Sciences;Key Laboratory of Hazardous Waste Identification and Risk Control,Ministry of Ecology and Environment,Chinese ResearchAcademy of Environmental Sciences)

机构地区：[1]环境基准与风险评估国家重点实验室,中国环境科学研究院 [2]生态环境部危险废物鉴别与风险控制重点实验室,中国环境科学研究院

出　　处：《环境工程技术学报》2024年第6期1969-1976,共8页Journal of Environmental Engineering Technology

基　　金：黄河流域生态保护和高质量发展联合研究项目(2022-YRUC-01-0301)。

摘　　要：地层和加重剂中的重金属钡是聚磺钻井岩屑的特征污染物,为明晰不同形态的钡引入的污染特性,区分毒性种类和危害性,采集了我国典型油气开采区聚磺钻井岩屑及其高温热解处理后的还原土样品,采用电感耦合等离子体原子发射光谱法测定岩屑和还原土样品中总钡、水溶性钡、以碳酸钡形式存在的钡元素含量,并转换为GB 5085.6—2007《危险废物鉴别标准毒性物质含量鉴别》中相应的含钡化合物含量,分析得到聚磺岩屑和还原土的毒性危险特性。结果表明,岩屑中钡的含量远高于其他重金属,但钡的浸出水平较低,远低于GB 5085.3—2007《危险废物鉴别标准浸出毒性鉴别》的限值。钡低浸出浓度的原因是其主要以硫酸钡的形态存在,而非水溶性钡和碳酸钡形态。以上区分不同形态钡的检测方法可为精准识别钻井废物中的含钡毒性物质、评估其毒性危险特性提供参考。The heavy metal barium in the formation and aggravating agent is the characteristic pollutant of polysulfonate drilling cuttings.In order to clarify the pollution characteristics introduced by different forms of barium,distinguish the types of toxicity and harm,samples from polysulfonate drilling and the reducing soil after high-temperature pyrolysis in a typical oil and gas exploitation area in China were collected.The contents of total barium,water-soluble barium and barium in the form of barium carbonate were determined by inductively coupled plasma atomic emission spectrometry and were converted into the content of corresponding barium compounds in Identification Standards for Hazardous Wastes-Identification for Toxic Substance Content(GB 5085.6-2007).The toxic and dangerous characteristics of polysulfonate cuttings and reducing soil were analyzed.The research showed that the content of barium in drilling cuttings was much higher than those of other heavy metals,but the leaching level of barium was far below the limit of Identification Standards for Hazardous Wastes-Identification for Extraction Toxicity(GB 5085.3-2007).The main reason for the low barium leaching concentration was that barium mainly existed in the form of barium sulfate,but not in the form of water-soluble barium and barium carbonate.The above detection method to distinguish different forms of barium in cuttings can provide a reference for scientifically identifying barium-containing toxic substances in cuttings and evaluating their toxic and dangerous characteristics.

关 键 词：钻井岩屑 钡 危险废物 毒性物质含量 

分 类 号：X705[环境科学与工程—环境工程]