Levels of Selected Essential and Non-Essential Metals in the Soil and Ginger (<i>Zingiber officinale</i>) Cultivated in Wolaita Zone, Ethiopia
Levels of Selected Essential and Non-Essential Metals in the Soil and Ginger (<i>Zingiber officinale</i>) Cultivated in Wolaita Zone, Ethiopia作者机构：Department of Chemistry College of Natural & Computational Science Wolita Sodo University Sodo Ethiopia
出 版 物：《Journal of Agricultural Chemistry and Environment》 (农业化学和环境（英文）)
年 卷 期：2020年第9卷第4期
页 面：276-298页
学科分类：08[工学] 0822[工学-轻工技术与工程]
主 题：Essential Metals Flame Atomic Absorption Spectroscopy Ginger Non-Essential Metals Soil Organic Carbon Total Nitrogen Cation Exchange Capacity Organic Matter
摘 要：Ginger (Zingiber officinale) is an important spice and medicinal plant used in different parts of the world. The objective of current study was to determine the level of essential and non-essential metals in ginger and its correlation with concentration of metals in the supporting soil. The level of K, Na, Ca, Mg, Mn, Fe, Zn, Cu, Co, Cd and Pb in soil and ginger cultivated in the selected districts of Wolaita zone, Southern Ethiopia were determined using flame atomic absorption spectrometry. A 0.5 g ginger sample was digested using a mixture of 4 ml HNO3 and 1.5 ml HClO4 at 210°C for 150 minutes, and a 0.5 g soil sample was digested employing a mixture of 6 ml aqua-regia and 1 ml H2O2 at 280°C for 150 minutes. The metal concentrations range in dry weight basis for ginger samples is decreasing in the order: K (1691 - 3487 mg/kg) Mg (701 - 1583 mg/kg) Ca (862 - 1476 mg/kg) Na (398 - 776 mg/kg) Mn (325 - 672 mg/kg) Fe (6.14 - 11.92 mg/kg) Zn (5.30 - 10.09 mg/kg) (0.12 - 0.23 mg/kg) for Pb. The concentration of Cd, Cu and Co in ginger samples were below the limit of detection. The results revealed that ginger has the ability to accumulate relatively higher amounts of K and Mg among the determined essential metals. The soil samples have been found to be acidic pH, sandy clay loam in texture, a very low electrical conductivity and moderate level of (CEC, organic carbon, available phosphorus and to
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