Assessing the Toxicity of Colocassia Esculenta (Cocoyam Plant) Grown on Mercury Contaminated Soil

D. Asare, E. Anderson, M. E. Amosah, R. Ntiri-Bekoh, G. Ofori-Sarpong
{"title":"Assessing the Toxicity of Colocassia Esculenta (Cocoyam Plant) Grown on Mercury Contaminated Soil","authors":"D. Asare, E. Anderson, M. E. Amosah, R. Ntiri-Bekoh, G. Ofori-Sarpong","doi":"10.4314/gm.v21i2.6","DOIUrl":null,"url":null,"abstract":"The unsafe disposal of heavy metals is a serious environmental problem all over the world as it has devastating effects on plant biodiversity as well as animal and human health. Contamination can be caused by effluents from industries and exposure of rocks containing metalloid or heavy metals such as arsenic (As), lead (Pb), and mercury (Hg). Several techniques have been used to clean up soil and water bodies contaminated with these heavy metals or metalloid. Phytoremediation is one of the emerging methods which has proven to be ecofriendly and efficient. Plants such as Colocasia esculenta have been reported to be a hyperaccumulator. However, there are concerns regarding the excessive metal uptake by the plant when grown on mercury-contaminated sites, since high Hg levels can cause toxicity in human beings. This study was thus carried out to ascertain the toxicity of C. esculenta plants cultivated in 10 ppm Hg-induced soil sample for four weeks. The concentration of mercury in soil, water and cocoyam samples decreased after 28 days of planting. Accumulation of Hg in plant tissues was measured, and Translocation Factor (TF) was calculated. TF was in the order of Root-Stem (0.60) > Root-Leaves (0.56) > Soil-Root (0.23).  The results indicated that Cocoyam plants have an excellent ability to remove Hg from contaminated soils and further accumulate it in their tissues. With the threshold level of Hg at 0.0016 mg/kg body weight (FAO/WHO), the results obtained suggest that cocoyam plants grown in such contaminated areas may pose health threats to humans.","PeriodicalId":12530,"journal":{"name":"Ghana Mining Journal","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2021-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Ghana Mining Journal","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.4314/gm.v21i2.6","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0

Abstract

The unsafe disposal of heavy metals is a serious environmental problem all over the world as it has devastating effects on plant biodiversity as well as animal and human health. Contamination can be caused by effluents from industries and exposure of rocks containing metalloid or heavy metals such as arsenic (As), lead (Pb), and mercury (Hg). Several techniques have been used to clean up soil and water bodies contaminated with these heavy metals or metalloid. Phytoremediation is one of the emerging methods which has proven to be ecofriendly and efficient. Plants such as Colocasia esculenta have been reported to be a hyperaccumulator. However, there are concerns regarding the excessive metal uptake by the plant when grown on mercury-contaminated sites, since high Hg levels can cause toxicity in human beings. This study was thus carried out to ascertain the toxicity of C. esculenta plants cultivated in 10 ppm Hg-induced soil sample for four weeks. The concentration of mercury in soil, water and cocoyam samples decreased after 28 days of planting. Accumulation of Hg in plant tissues was measured, and Translocation Factor (TF) was calculated. TF was in the order of Root-Stem (0.60) > Root-Leaves (0.56) > Soil-Root (0.23).  The results indicated that Cocoyam plants have an excellent ability to remove Hg from contaminated soils and further accumulate it in their tissues. With the threshold level of Hg at 0.0016 mg/kg body weight (FAO/WHO), the results obtained suggest that cocoyam plants grown in such contaminated areas may pose health threats to humans.
查看原文
分享 分享
微信好友 朋友圈 QQ好友 复制链接
本刊更多论文
在汞污染土壤上生长的椰子树毒性评价
重金属的不安全处置对植物生物多样性以及动物和人类健康造成毁灭性影响,是世界范围内的一个严重环境问题。污染可由工业废水和接触含有类金属或重金属如砷(as)、铅(Pb)和汞(Hg)的岩石引起。已经使用了几种技术来清理被这些重金属或类金属污染的土壤和水体。植物修复是一种新兴的环保、高效的修复方法。据报道,一些植物,如土芋草(Colocasia esculenta)是一种超蓄能器。然而,由于高汞含量会对人体造成毒性,因此人们担心在汞污染场地生长的植物会吸收过多的金属。因此,本研究是为了确定在10ppm汞诱导的土壤样品中栽培4周的牛蒡草的毒性。种植28 d后,土壤、水体和椰子样品中汞的浓度均有所下降。测定汞在植物组织中的累积量,计算转运因子(TF)。TF大小依次为:根-茎(0.60)、根-叶(0.56)、土-根(0.23)。结果表明,椰子树对污染土壤中的汞具有良好的脱除能力,并在其组织中进一步积累。汞的阈值水平为0.0016 mg/kg体重(FAO/WHO),结果表明,在这些污染地区种植的椰子树可能对人类健康构成威胁。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 去求助
来源期刊
自引率
0.00%
发文量
0
期刊最新文献
Geotechnical Modeling of Optimal Pit: West Limb of the Tarkwaian of Ghana A Geoeconomic Planning and Evaluation Model for Artisanal Small-Scale Gold Mining in Ghana Beneficiation of Iron Oxides from Cupola Furnace Slags for Arsenic Removal from Mine Tailings Decant Water A Contactless IoT-Based GPS-Tracked Waste Bin to Curb Medical Waste Infections in Ghana Characterisation of Small-Scale Gold Mining Tailings in the Western Region of Ghana
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
已复制链接
已复制链接
快去分享给好友吧!
我知道了
×
扫码分享
扫码分享
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1