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-1(R2≥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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