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| Determination of available lead in soil by isothermal oscillation extraction inductively coupled plasma mass spectrometry |
| Received:October 25, 2022 |
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| KeyWord:soil;available lead;oscillation;inductively coupled plasma mass spectrometer(ICP-MS) |
| Author Name | Affiliation | | TIAN Ge | 514 Geological Brigade of North China Geological Survey Bureau, Chengde 067000, China | | GUO Yingchao | 514 Geological Brigade of North China Geological Survey Bureau, Chengde 067000, China | | LIU Wei | 514 Geological Brigade of North China Geological Survey Bureau, Chengde 067000, China | | GU Zhoulei | 514 Geological Brigade of North China Geological Survey Bureau, Chengde 067000, China | | HE Xu | 514 Geological Brigade of North China Geological Survey Bureau, Chengde 067000, China |
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| Abstract: |
| To accurately and quickly detect the effective lead content in soil, available soil standard substances were taken as the research objects, with the intelligent precision shaking table used as the pretreatment equipment. Furthermore, the inductively coupled plasma mass spectrometer(ICP-MS) was used for testing. The conditions were investigated with respect to the extraction temperature, oscillation time, oscillation frequency, and amount of extractant. The optimal experimental conditions were also determined. The experimental results showed that the detection limit of the proposed method was 0.009 mg · kg-1, and the relative standard deviation(RSD) of soil available standard substances was 2.1%-3.3%. These results implied that the method had good precision, high accuracy, and a low detection limit. The proposed method and the national standard method were used to compare samples collected throughout different regions, and the relative deviation was shown to be less than 5%, thereby verifying the accuracy and reliability of the obtained results. The pretreatment of isothermal oscillating extraction ICP-MS is simple, controllable, efficient, accurate, and reliable. Therefore, it is considered suitable for batch production and has promising application potential. |
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