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Evaluation of Essential and toxic element Concentrations in Buckwheat by Experimental and Chemometric Approaches

Journal of Integrative Agriculture 2014年第8期13卷 1691-1698页

作者： PENG Lian-xin HUANG Yan-fei LIU Yuan ZHANG Zhi-feng LU Lu-yang ZHAO Gang College of Biotechnology Industry Chengdu University Institute of Ethnic Medicine Southwest University for Nationalities Key Laboratory of Traditional Chinese Medicine Resource and Compound Prescription Ministry of Education/Hubei University of Chinese Medicine

The essential and toxic element concentrations in buckwheat were analyzed by inductively coupled plasma optical emission spectrometer（ICP-OES）. The concentration data were subjected to common chemometrics analyses, including correlation analysis（CA）, principal component analysis（PCA） and hierarchical cluster analysis（HCA）, to gain better understanding of the differences among the tested samples. Our results indicated that the essential and toxic element concentrations were not different between Fagopyrum tataricum（L.） Gaertn and F. esculentum Moench. The element concentrations varied among buckwheat samples from different sources. Commercial tartary buckwheat tea contained several essential elements, thus, could be used as the source of essential elements. The detection of toxic heavy metals in commercial tartary buckwheat tea suggested that safety issue of such buckwheat products should be seriously concerned. Our results also revealed that the place of origin and the processing protocol of tartary buckwheat affected the element concentrations of the commercial form. The implications to the quality control and safety evaluation of buckwheat were extensively discussed.

关键词： buckwheat ICP-OES trace element toxic element chemometrics

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Evaluation of Essential and toxic element Concentrations in Different Parts of Buckwheat

Evaluation of Essential and Toxic Element Concentrations in ...

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中药与天然药高峰论坛暨第十二届全国中药和天然药物学术研...

作者： Yan-Fei Huang~(1,#),Lian-Xin Peng~(2,#),Yuan Liu~(1,*),Zhi-Feng Zhang~1,Lu-Yang Lu~1,Gang Zhao~(2,*) 1 Institute of Ethnic Medicine,Southwest University for Nationalities,Chengdu 610041,People''s Republic of China 2 College of Biotechnology Industries,Chengdu University,Chengdu 610106,People''s Republic of China

＜正＞The element concentrations in different parts of buckwheat and the commercial products were analyzed by experimental and chemometric *** results indicated that the essential and toxic element concentrations were significantly different in various parts of the buckwheat, where seeds had the lowest *** elemental patterns were not significantly different between Fagopyrum tataricum（L.）Gaertn and *** *** essential elements were found in the commercial buckwheat *** detection of heavy metals manifested the potential toxicity of buckwheat.

关键词： buckwheat ICP-OES essential element toxic element chemometrics

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Influence of soil physicochemical properties,particle size fractions and mineralogy on the leaching potentials of arsenic and antimony in abandoned mine soils

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Pedosphere 2023年第5期33卷 744-753页

作者： A.S.M.Fazle BARI Dane LAMB Geoff R.MACFARLANE Mohammad Mahmudur RAHMAN Global Centre for Environmental Remediation(GCER) College of EngineeringScience and EnvironmentThe University of NewcastleCallaghanNSW 2308Australia Department of Soil Science Sher-e-Bangla Agricultural UniversityDhaka 1207Bangladesh Chemical and Environmental Engineering School of EngineeringRMIT UniversityMelbourneVictoria 3000Australia School of Environmental and Life Sciences The University of NewcastleCallaghanNSW 2308Australia

At abandoned mine sites,arsenic(As)-and antimony(Sb)-enriched soils are often disposed of through onsite burial or *** highly weathered mine sites,the mobility of As and Sb is typically controlled by iron(Fe)(III)/Fe(II)phases;thus,the suitability of such disposal methods and appropriate testing techniques are *** the present study,leaching potentials of As and Sb were examined using the toxicity characteristic leaching procedure(TCLP),waste extraction test(WET),and WET-extended procedure(WET-EXT)at three abandoned mine site soils in *** leached concentration of As regularly exceeded USEPA criteria(5 mg L^(-1)).The highest leached concentrations of As and Sb were observed in the finest particle size fraction(<0.053 mm)by WET-EXT(1040 mg L^(-1)for As and 21.10 mg L^(-1)for Sb)followed by WET(800 mg L^(-1)for As and 20.90 mg L^(-1)for Sb).The TCLP method resulted in the lowest concentrations of leached As(0.0009 mg L^(-1))and Sb(0.0003 mg L^(-1)).Crystalline and amorphous As-bearing Fe oxides were the main phases in the soils ***,the best correlations of leached As determined by TCLP(0.832),WET(0.944),and WET-EXT(0.961)were found with the non-specifically sorbed(NS1)As *** mineralogical and sequential extraction data clearly indicate the dominant role of Fe geochemistry in controlling leachability of As and *** TCLP method was unlikely to be suitable for assessing leachability,as it exhibited no relationship with leachable Fe and substantially lower leached As and Sb than the other two *** the high to extremely high leachable As and Sb concentrations,most of the soil samples would not be recommended for placement in capping works,old shafts,or reduction systems(e.g.,collection in drainage basins).

关键词： particle size fraction sequential extraction toxic element toxicity characteristic leaching procedure waste extraction test

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Phyto-metals screening of selected anti-diabetic herbs and infused concoctions

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Asian Pacific Journal of Tropical Biomedicine 2017年第10期7卷 909-914页

作者： Olanrewaju O. Olujimi Olusegun N.Onifade Adeleke T.Towolawi Temilade F.Akinhanmi Adeniyi A.Afolabi Kabir A.Olanite Department of Environmental Management and toxicology Federal University of AgriculturePMB 2240AbeokutaOgun StateNigeria Department of Chemistry Federal University of AgriculturePMB 2240AbeokutaOgun StateNigeria

Objective: To determine the levels of some selected heavy metals in both the selected anti-diabetic herbal plants and infused concoctions for diabetes ***: Ten anti-diabetic plant samples: pawpaw leaves(Carica papaya), bitter melon leaves(Momordica charantia), holy basil leaves(Ocimum sanctum), bitter leaf(Vernonia amygdalina), ginger rhizome(Zingiber officinale), garlic(Allium sativum), African red pepper fruits(Capsicum frutescens), negro pepper grain(Xylopia aethiopica), cashew leaves(Anacardium occidentale) and onion bulb(Allium cepa) were evaluated for heavy metals. These were digested using standard methods and analyzed for manganese, copper,nickel, chromium, zinc, cadmium and lead using atomic absorption *** infused concoctions(I and II) prepared from these medicinal herbs administered to diabetic patients were also analyzed for these heavy metals. Concoction I contained all the plants and honey with the exception of Momordica charantia and Ocimum sanctum which constituted concoction II with water only. The data obtained were subject to descriptive(mean and standard deviation) and inferential(ANOVA and DMRT)***: Chromium and nickel levels were below detection limits in concoction I while manganese [(0.11 ± 0.01) μg/g] and zinc [(0.09 ± 0.01) μg/g] were detected in concoction II. Honey contained manganese [(0.10 ± 0.01) μg/g] and nickel [(0.70 ± 0.01) μg/g]. The anti-diabetic medicinal herbs and infused concoctions(I and II) were observed to contain heavy metals below the compared ***: The study thus shows that the herbs and concoctions are safe from the heavy metals considered. However, right dosage of the anti-diabetic concoctions should always be considered to prevent possible chronic side effects from bio-accumulation of heavy metals.

关键词： Diabetic Medicinal plants Honey toxic element Nigeria

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