Determination of seven plant nutritional elements in potassium dihydrogen phosphate fertilizer from northeastern China

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• 作者：Yu-kui  ; Rui  ; ;   ; ^{ruiyukui@163.com} ; Jing  ; Hao ; Fafu  ; Rui
• 关键词：Foliar fertilizers ; Plant nutritional elements ; Potassium dihydrogen phosphate ; False fertilizer ; ICP-MS
• 刊名：Journal of Saudi Chemical Society
• 出版年：2012
• 出版时间：January 2012
• 年：2012
• 卷：16
• 期：1
• 页码：89-90
• 全文大小：303 K

文摘

Contents of seven plant nutritional elements in potassium dihydrogen phosphate fertilizer were determined by ICP-MS. Correlation coefficients of the detected elements changed between 0.9631 and 0.9999, the limits of detection range from 0.18 to 0.77 ¦Ìg/L, and relative standard deviations range from 1.17 % to 3.82 % for all the elements, ICP-MS (Inductively Coupled Plasma-Mass Spectrometry) is a good method to determine plant nutritional elements simultaneously. Data showed that brand 1 is a real KH₂PO₄ fertilizer, but P and K concentrations are obviously lower than the labeled value; another brand contained little KH₂PO₄, so this fertilizer is a false fertilizer. We can know that KH₂PO₄ fertilizers contain some other plant nutritional elements, such as B, Si and Zn, so KH₂PO₄ fertilizers not only provide K and P but also some trace elements.