文章摘要
吴凤,区嘉铖,李彦文,赵海明,蔡全英,向垒,莫测辉.固相萃取净化/GC-MS法测定水/土样品中α-松油醇含量[J].农业环境科学学报,2024,43(9):2183-2190.
固相萃取净化/GC-MS法测定水/土样品中α-松油醇含量
Determination of α-terpineol in aqueous and soil samples using solid-liquid extraction purification coupled with gas chromatography/mass spectrometry
投稿时间:2024-07-26  
DOI:10.11654/jaes.2024-0638
中文关键词: 有机选冶药剂  选矿废水  土壤  松油醇  GC-MS
英文关键词: organic flotation chemical  beneficiation wastewater  soil  α-terpineol  gas chromatography/mass spectrometry(GC-MS)
基金项目:国家重点研发计划项目(2020YFC1807600)
作者单位E-mail
吴凤 暨南大学生命科学技术学院, 广东省环境污染控制与修复材料工程中心, 广州 510632  
区嘉铖 暨南大学生命科学技术学院, 广东省环境污染控制与修复材料工程中心, 广州 510632  
李彦文 暨南大学生命科学技术学院, 广东省环境污染控制与修复材料工程中心, 广州 510632  
赵海明 暨南大学生命科学技术学院, 广东省环境污染控制与修复材料工程中心, 广州 510632  
蔡全英 暨南大学生命科学技术学院, 广东省环境污染控制与修复材料工程中心, 广州 510632  
向垒 暨南大学生命科学技术学院, 广东省环境污染控制与修复材料工程中心, 广州 510632 xianglei@jnu.edu.cn 
莫测辉 暨南大学生命科学技术学院, 广东省环境污染控制与修复材料工程中心, 广州 510632 tchmo@jnu.edu.cn 
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中文摘要:
      采用固相萃取净化结合GC-MS法分别建立了测定水/土样品中典型有机浮选药剂(α-松油醇)的方法。采用DB-5 MS进行色谱分离,电子轰击(EI)-选择离子检测(SIM)和基质标线进行定量分析。水/土样品均采用二氯甲烷进行萃取,水样萃取时,先将其pH值和盐度调整为7.5和0.5%,之后采用二氯甲烷进行3次萃取;土壤萃取时采用二氯甲烷进行2次振荡萃取,萃取液旋转蒸发近干后用1 mL甲醇定容为萃取质。水、土样品萃取质均采用C18小柱进行固相萃取净化。在上述最优萃取条件下,目标化合物在0.1~5mg·L-1浓度范围内线性关系良好(R2 ≥0.998);其在水/土样品中的检出限(LOD)分别为0.027~0.041 mg·L-1(水样)和0.009~0.054 mg·kg-1(土样),在实际样品中不同浓度(1、2、5 mg·L-1或1、2、5 mg·kg-1)加标回收率分别为91.5%~112%[相对标准偏差(RSD)<15%,水样]和67%~114%(RSD<15%,土样)。
英文摘要:
      Methods for the determination of typical organic flotation reagent(α - terpineol)in water and soil samples were respectively established using solid phase extraction(SPE) purification and gas chromatography/mass spectrometry(GC-MS). Chromatographic separation of the analyte was performed using DB-5 MS, and its quantitative analysis was performed using electron bombardment(EI)- selected ion monitoring(SIM)and matrix-matched calibrations. Both water and soil samples were extracted with dichloromethane. For water sample, pH and salinity were adjusted to 7.5 and 0.5%, respectively, followed by three times of liquid-liquid extraction using dichloromethane as extractant. For soil sample, dichloromethane was used for oscillatory extraction twice. The extract was evaporated to dryness and then diluted to 1 mL with methanol as the extract. The extracts of water and soil samples were purified by solid phase extraction using a C18 cartridge. Under the optimal extraction conditions described above, the analyte showed a good linear relationship in the concentration range of 0.1~5 mg·L-1R2≥0.998). Its limit of detection(LOD)was determined as 0.027 mg·L-1 to 0.041 mg·L-1(water samples)and 0.009 mg·kg-1 to 0.054 mg·kg-1(soil samples), respectively. Its recoveries of spiked samples at different concentrations (1, 2, 5 mg·L-1 or 1, 2, 5 mg·kg-1)were 91.5% to 112% [Relative standard deviation(RSD)<15%, water samples] and 67% to 114% (RSD<15%, soil samples), respectively.
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