Particulate-bound mercury (PBM) in stems and leaves of several crops (white cabbage, Peking cabbage, and chili) at a farmland site in Taiwan
2016
Fang, Guor-Cheng | Lo, Chaur-Tsuen | Guo, Yuzhen | Zhuang, Yuan-Jie | Cho, Meng-Hsien
This study analyzes the particulate-bound mercury (PBM) contents of two parts (leaf and stem) of different crops (white cabbage, Peking cabbage, and chili) at a sampling site in the coastal zone in the Taichung area from October 7 to 15, 2014. A direct mercury analyzer (DMA-80) was used to measure mercury content. The Mann-Whitney rank sum test was utilized to determine the mean differences between the PBM in two parts of various crops (white cabbage leaf, white cabbage stem, Peking cabbage leaf, Peking cabbage stem, and chili) at the Long-Jing sampling site. The results indicated the following: 1) The average mercury content was lowest in the Peking cabbage stem. The ratio of the mercury content in the stem to that in the leaf of the white cabbage was 5 and that of Peking cabbage was 3.5.2) No significant difference was observed between median mercury content in white cabbage leaf and Peking cabbage leaf, white cabbage stem and Peking cabbage stem, and Peking cabbage leaf and chili. 3) The average PBM contents were both the lowest (Huabei Plain) and the highest in Hg in China. 4) The ratio of average PBM content of white cabbage leaf in this study was as high as 981.
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