[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fBB6b59N1H0-l6QXVZMI8pOZ-BCCnfk95K_RIN-fD6fE":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":11,"question":18,"related":19,"source":29,"type":30},[],"2026-05-20 20:53:28",379544051,[8,9,10],"1","2","3",{"count":12,"courseId":13,"courseImg":14,"courseName":15,"workId":16,"workName":17},87,"53e1d2ef4961cca8eea3e23969ad2cb9","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F03a579384a6dc297c89809b582fcc767.png","默认课程","2f92c90fd7234d97b953a1ea692bd23c","","根据《水和废水监测分析方法》(第四版)和《水质 挥发性有机物的测定 吹扫捕集\u002F气相色谱法》(HJ 686—2014 ),采集VOCs水样时,若无余氯,水样中应加 盐酸保存,使水样pH V . ( )",[20,31,37,46,55,64,72,81,90,93],{"answer":21,"createTime":5,"id":22,"options":23,"question":28,"source":29,"type":30},[],379544043,[24,25,26,27],"HN03, 24","HNO3, 24","5%HNO3, 24","浓 HC1, 12","根据《水质 烷基汞的测定 吹扫捕集\u002F气相色谱-冷原子荧光光谱法》(HJ 977一 2018)测定水中烷基汞(甲基汞和乙基汞)时,分析中所用的器皿(采样瓶、蒸個 瓶、接收瓶、聚四氟乙烯管等)应在 中浸泡至少 ho ( )③","v1",0,{"answer":32,"createTime":5,"id":33,"options":34,"question":36,"source":29,"type":30},[],379544044,[8,9,10,35],"5","根据《水质 烷基汞的测定 吹扫捕集\u002F气相色谱-冷原子荧光光谱法》(HJ 977—2018 )测定水中烷基汞(甲基汞和乙基汞)时,衍生化前,试样中Hg2+的含 量必须低于 ng.( )",{"answer":38,"createTime":5,"id":39,"options":40,"question":45,"source":29,"type":30},[],379544045,[41,42,43,44],"FPD, ECD","FID, ECD","ECD, FID","ECD, FPD","根据《水质 挥发性有机物的测定 吹扫捕集\u002F气相色谱法》(HJ 686—2014 )测定 水中挥发性有机物时,苯系物可以选用 检测器,卤代炷选用 检 测器.( )",{"answer":47,"createTime":5,"id":48,"options":49,"question":54,"source":29,"type":30},[],379544046,[50,51,52,53],"氮气,空气","氮气,氧气","高纯氮气,高纯氮气","氯气,空气","根据《水和废水监测分析方法》(第四版)和《水质 挥发性有机物的测定 吹扫捕集\u002F气相色谱法》(HJ 686—2014 )测定水中挥发性有机物时,吹脱水样用 或 .( )",{"answer":56,"createTime":5,"id":57,"options":58,"question":63,"source":29,"type":30},[],379544047,[59,60,61,62],"氯化钠","抗坏血酸","碳酸钠","硼酸钠","根据根据《水和废水监测分析方法》(第四版)和《水质 挥发性有机物的测定 吹扫捕集\u002F气相色谱法》(HJ 686—2014 )测定水中挥发性有机物时,水样中的余氯对 测定产生干扰,用 除去.( )",{"answer":65,"createTime":5,"id":66,"options":67,"question":71,"source":29,"type":30},[],379544048,[68,35,69,70],"8","11","15","根据《水质 挥发性有机物的测定 吹扫捕集\u002F气相色谱法》(HJ 686—2014 )测定水中挥发性有机物时,常用吹扫时间为 min.( )",{"answer":73,"createTime":5,"id":74,"options":75,"question":80,"source":29,"type":30},[],379544049,[76,77,78,79],"聚乙二醇,35%苯基甲基聚硅氧烷","35%苯基甲基聚硅氧烷,6%氣丙基苯-94%二甲基聚硅氧烷","聚乙二醇,6%氤丙基苯-94%二甲基聚硅氧烷","6%氤丙基苯-94%二甲基聚硅氧烷,5%苯基-95%甲基聚硅氧烷","根据《水质 挥发性有机物的测定 吹扫捕集\u002F气相色谱法》(HJ 686—2014)测 定水中挥发性有机物时,推荐分析苯系物使用固定相为 的厚液膜石英 毛细管色谱柱,分析卤代炷使用固定相为 的厚液膜石英毛细管色谱柱. ( )",{"answer":82,"createTime":5,"id":83,"options":84,"question":89,"source":29,"type":30},[],379544050,[85,86,87,88],"30-220","50—260","30-260","50-300","根据《水和废水监测分析方法》(第四版)和《水质 挥发性有机物的测定 吹扫 捕集\u002F气相色谱法》(HJ 686-2014 ),挥发性有机物指常温常压下能够挥发或气态 的有机物,世界卫生组织(WHO, 1989)定义熔点低于室温、沸点在 龙 之间的有机物为挥发性有机物,英文Volatile Organic Compounds,简写为V0Cs.( )",{"answer":91,"createTime":5,"id":6,"options":92,"question":18,"source":29,"type":30},[],[8,9,10],{"answer":94,"createTime":5,"id":95,"options":96,"question":101,"source":29,"type":30},[],379544052,[97,98,99,100],"地表水和废水","地表水",",废水","地下水","气相色谱法适用于 中三氯乙醛的测定.( )"]