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- Title
便携式锂钾分析仪在钾盐资源现场勘查中的应用.
- Authors
刘 晓; 袁继海; 孙东阳; 樊兴涛; 詹秀春
- Abstract
Sylvine, as the main raw material of potash fertilizer among the three major agricultural fertilizers, is an important guarantee for national food security and one of the seven scarce bulk strategic mineral resources in China. Currently, soluble potash resources are mainly available for exploitation and utilization. It is urgent to support on-site exploration and exploitation by using relevant instruments and rapid analytical technology. On the basis of ultrasonic digestion of drilling potash samples, the wavelength of characteristic spectral line of K was set at 766.49 nm, and a rapid analytical method for determination of water soluble K in potassium salt samples was established by self-developed portable Li-K analyzer, which was demonstrated and applied in drilling site. Under the optimum operating conditions, the detection limit of K was 9.0 μg/L and the measured precision (RSD) was better than 2%. The standard addition recovery experiments of potassium salt samples were all within the range of 94.5%~106.7%. The on-site analytical results of potassium salt samples agreed well with those by laboratory ICP-AES measurements, which shows that the accuracy of rapid field analytical method is good and can meet the requirements of geological survey and resource exploration. This work has laid a practical foundation for real-time guidance of on-site exploration and exploitation of potassium salt resources by providing scientific information and technical support.
- Publication
Acta Geoscientica Sinica, 2021, Vol 42, Issue 4, p573
- ISSN
1006-3021
- Publication type
Article
- DOI
10.3975/cagsb.2020.103001