生態農業：農業精準栽培管理技術開發【土環系賴鴻裕教授】
論文篇名 英文：Chemical forms and health risk of cadmium in water spinach grown in contaminated soil with an increased level of phosphorus
中文：提升污染土壤中的磷濃度對蕹菜累積鎘的化學型態及健康風險之影響
期刊名稱 Int. J. Environ. Res. Public Health
發表年份,卷數,起迄頁數 2019, 16:3322
作者 Lam, C.M., K.S. Chen, and H.Y. Lai* (通訊作者)
DOI 10.3390/ijerph16183322
中文摘要 由於許多葉菜類作物對於鎘的累積能力高，因此儘管種植在鎘濃度甚低的土壤中，仍然有可能生產出對健康具有風險的作物。本研究以台灣四種主要的土系進行試驗，這些土系包含萬合土系(Wa)、二林土系(Eh)、太康土系(Tk)及員林土系(Yu)，首先以人為添加的方式配製成鎘污染土壤再種植蕹菜，並將土壤中的有效性磷則提升至10~15 mg/kg，採收後分析蕹菜累積的鎘濃度及其化學型態分布。研究結果顯示，與對照組比較，添加磷雖可以促進Wa及Eh中蕹菜之生長，但累積的鎘濃度及往地上部的傳輸亦會增加。添加磷的處理可以增加不溶解磷酸鎘化學型態的百分比，進而降低鎘的移動性及對於蕹菜的毒害；然而，利用不同方式所計算出的危害商數仍高，因此不同處理下所生產出的蕹菜仍不能食用。
英文摘要 Even in croplands with a low concentration of cadmium, there is still a risk to plant crops because of the high accumulation capacity of some leafy vegetables. In this study, water spinach was planted in four main soil series (Wa, Eh, Tk, and Yu) in Taiwan that were spiked with Cd. The soil’s available phosphorous content was increased to 10–15 mg/kg, and the accumulation and developed chemical forms of Cd were analyzed. The experimental results showed that addition of phosphorous to Wa and Eh promote the growth of water spinach. Accumulation and upward translocation of Cd were also increased in the phosphorus treatment compared to the control. The addition of phosphorus increased the percentage of Cd compartmentalized in undissolved Cd phosphate, which revealed that the mobility and toxicity of Cd were reduced in the phosphorus treatment. However, most of the water spinach was not edible because the vegetable-induced hazard quotient, which was calculated using three methods, showed hazardous potential in general.