Chemical Speciation and Bioavailability最新文献_第10页

Influences of natural zeolite on speciation of heavy metals during rotary drum composting of green waste 天然沸石对绿色废弃物转鼓堆肥过程中重金属形态的影响

Chemical Speciation and Bioavailability Pub Date : 2014-01-01 DOI: 10.3184/095422914X13953177945668

Jiwan Singh, A. Kalamdhad

{"title":"Influences of natural zeolite on speciation of heavy metals during rotary drum composting of green waste","authors":"Jiwan Singh, A. Kalamdhad","doi":"10.3184/095422914X13953177945668","DOIUrl":"https://doi.org/10.3184/095422914X13953177945668","url":null,"abstract":"Abstract The presence of heavy metals in water hyacinth compost is the main limiting factor for its land application. Water hyacinth can accumulate heavy metals in its tissues. Application of natural zeolites (clinoptilolite) during water hyacinth composting may be helpful to immobilise heavy metals. The present study was carried out on the speciation of heavy metals (Zn, Cu, Mn, Fe, Pb, Ni, Cd and Cr) during rotary drum composting of water hyacinth mixed with cattle manure, sawdust and natural zeolite. The Tessier sequential extraction method was used for heavy metal speciation determination. The water hyacinth, cattle manure and sawdust at a ratio of 6:3:1 ratio was mixed with 5, 10 and 15% natural zeolite by weight. Influences of physicochemical parameters such as temperature, pH and organic matter degradation on speciation of heavy metals were studied during the process. A rotary drum composter has been shown to be highly efficient for organic matter degradation. The most bioavailable fractions (exchangeable and carbonate fractions) were reduced significantly due to the combined effects of zeolite addition and metal complexing with stabilised organic matter as a result of the high degradation of organic matter in a rotary drum. Ni, Pb and Cd were not found in the reducible and oxidisable fractions. Overall, the addition of an optimum quantity of natural zeolite significantly reduced the bioavailability fractions of heavy metals during rotary drum composting of the water hyacinth.","PeriodicalId":55264,"journal":{"name":"Chemical Speciation and Bioavailability","volume":"26 1","pages":"65 - 75"},"PeriodicalIF":0.0,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.3184/095422914X13953177945668","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69663053","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 17

Mercury contamination in five owl species from Iran 伊朗五种猫头鹰的汞污染

Chemical Speciation and Bioavailability Pub Date : 2014-01-01 DOI: 10.3184/095422914X14035470360542

Reza Dahmardeh Behrooz, Seyed Mahmoud Ghasempouri, Amin Mishmast Nehi, M. Nowrouzi, Mandana Barghi

引用次数: 9

Reduction of bioavailability of heavy metals during vermicomposting of phumdi biomass of Loktak Lake (India) using Eisenia fetida 印度洛克塔克湖(Loktak Lake)飞虱生物量蚯蚓堆肥过程中重金属生物利用度的降低

Chemical Speciation and Bioavailability Pub Date : 2014-01-01 DOI: 10.3184/095422914X14043211756226

W. Roshan Singh, Shashi Kumar Pankaj, Jiwan Singh, A. Kalamdhad

{"title":"Reduction of bioavailability of heavy metals during vermicomposting of phumdi biomass of Loktak Lake (India) using Eisenia fetida","authors":"W. Roshan Singh, Shashi Kumar Pankaj, Jiwan Singh, A. Kalamdhad","doi":"10.3184/095422914X14043211756226","DOIUrl":"https://doi.org/10.3184/095422914X14043211756226","url":null,"abstract":"Abstract Vermicomposting of phumdi biomass is a good alternative for protecting Loktak Lake and is advantageous for agriculture purposes. Research was carried out on bioavailability and leachability of nutrients (Na, K, Ca and Mg) and heavy metals (Zn, Cu, Mn, Fe, Ni, Pb, Cd and Cr) during vermicomposting of phumdi biomass for 45 days using Eisenia fetida earthworm. The bioavailability of heavy metals was determined in the form of water soluble and diethylene triamine penta-acetic acid (DTPA) extractable. The toxicity characteristic leaching procedure test was performed to determine the leachable heavy metals during the vermicomposting process. The concentration of nutrients increased during the process; whereas the concentration of water soluble, DTPA extractable and leachable heavy metals decreased significantly in all the trials. The vermicomposting of phumdi biomass by Eisenia fetida was very effective for the reduction of bioavailability and leachability of selected heavy metals. The leachability test confirmed that prepared vermicompost is not hazardous for soil, plants and human health. The possibility of using earthworms to mitigate the metal toxicity and to enhance the nutrient profile in phumdi biomass vermicompost, is advantageous in sustainable land renovation practices on a low-input basis.","PeriodicalId":55264,"journal":{"name":"Chemical Speciation and Bioavailability","volume":"26 1","pages":"158 - 166"},"PeriodicalIF":0.0,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.3184/095422914X14043211756226","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69664588","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

Toxicity, bioaccumulation and biomagnification of silver nanoparticles in green algae (Chlorella sp.), water flea (Moina macrocopa), blood worm (Chironomus spp.) and silver barb (Barbonymus gonionotus) 纳米银颗粒在绿藻(Chlorella sp.)、水蚤(Moina macrocopa)、血虫(Chironomus spp.)和银倒刺(Barbonymus gonionotus)中的毒性、生物蓄积和生物放大作用

Chemical Speciation and Bioavailability Pub Date : 2014-01-01 DOI: 10.3184/095422914X14144332205573

M. Yoo-iam, R. Chaichana, T. Satapanajaru

{"title":"Toxicity, bioaccumulation and biomagnification of silver nanoparticles in green algae (Chlorella sp.), water flea (Moina macrocopa), blood worm (Chironomus spp.) and silver barb (Barbonymus gonionotus)","authors":"M. Yoo-iam, R. Chaichana, T. Satapanajaru","doi":"10.3184/095422914X14144332205573","DOIUrl":"https://doi.org/10.3184/095422914X14144332205573","url":null,"abstract":"Abstract The toxicity, bioaccumulation and biomagnification of material containing silver nanoparticles were studied in a model food chain. Two forms of silver namely, Ag+ and nano Ag° particles (AgNPs) were examined for their toxicity effects on Chlorella sp., Moina macrocopa, Barbonymus gonionotus and Chironomus spp. The results showed that the toxicity order on the four organisms was free Ag+> AgNPs. For toxicity of Ag+, the EC5° (effective concentration) was 0.39±0.32 mg L-1 for Chlorella sp. and the LC5° (lethal concentration) of M. macrocopa, B. gonionotus and Chironomus spp. were 0.026±0.43 mg L-1, 0.057±1.15 mg L-1, and 0.042±0.19 mg L-1, respectively. For toxicity, the EC5° of AgNPs was 0.89±0.68 mg L-1 for Chlorella sp. and the LC5° of M. macrocopa, B. gonionotusand Chironomus spp. were 1.11±0.86 mg L-1, 1.76±0.19 mg L-1, and 1.08±1.21 mg L-1, respectively. The results of the bioaccumulation study indicated that the highest bioaccumulation factor (BAF) of Ag+ was 101.84 L g-1 in Chlorella sp. and the lowest BAF of AgNPs was 1.89 L g-1 in B. gonionotus. The food chain transfer of AgNPs occurred only from Chlorella sp. to M. macrocopa and there was no evidence of biomagnification from food sources to consumers in a simple tropical food chain.","PeriodicalId":55264,"journal":{"name":"Chemical Speciation and Bioavailability","volume":"50 1","pages":"257 - 265"},"PeriodicalIF":0.0,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.3184/095422914X14144332205573","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69665292","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 69

Hazardous elements speciation in sandy, alkaline coal mine overburden by using different sequential extraction procedures 砂质碱性煤矿覆盖层中不同顺序提取方法对有害元素形态的影响

Chemical Speciation and Bioavailability Pub Date : 2014-01-01 DOI: 10.3184/095422914X13950805573918

I. Trajković, Vlado Ličinaa, S. Antić-Mladenović, W. Wenzel

{"title":"Hazardous elements speciation in sandy, alkaline coal mine overburden by using different sequential extraction procedures","authors":"I. Trajković, Vlado Ličinaa, S. Antić-Mladenović, W. Wenzel","doi":"10.3184/095422914X13950805573918","DOIUrl":"https://doi.org/10.3184/095422914X13950805573918","url":null,"abstract":"Abstract This paper deals with the problem of hazardous elements (HE) speciation in sandy, alkaline coal mine overburden destined for restoration. Two sequential extraction procedures [five stages Tesier’s (T) and seven stages Zeien and Brümmner’s method (ZB)] were employed that focused on potentially bioavailable HE fractions previously found in plants growing during this soil restoration process. The results showed that the selection of the extraction procedure in HE speciation is essential, due to the different potential threats of HE fractions obtained for plants. The biggest residual fraction obtained by both extractions suggest geogenic origin of Cu, Zn, Ni, Cr and Pb. Tesier’s extraction procedure works reasonably well for low concentration of water soluble and exchangeable HEs, whilst giving higher values for their organically bound forms. Zeien and Brümmner’s method, however, was found to be more appropriate for evaluation of the mobility of HE as Mn and Fe oxide fractions. The principal component analysis test estimated three main groups where the relationship between soil properties (pH, clay and silt), total content of element and available fractions (Zn, Ni, Cr, Pb-T and Ni-ZB) was defined as a PC 1 group. Other PC 2 and PC 3 from the PCA analysis include Corg and CEC, and available Cu-T and Cr, Pb-ZB, respectively. The PC 3 factor linked fine sand and available Zn-ZB. Pearson’s correlation coefficients showed a high correlation between available HE and high pH(KCl) obtained by T-extraction, and Ni by Zn-extraction. Also, clay, silt and fine sand were highly correlated with the Ni-ZB available forms.","PeriodicalId":55264,"journal":{"name":"Chemical Speciation and Bioavailability","volume":"26 1","pages":"85 - 91"},"PeriodicalIF":0.0,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.3184/095422914X13950805573918","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69662872","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Mycoremediation (bioremediation with fungi) – growing mushrooms to clean the earth 真菌修复(真菌生物修复)-种植蘑菇来清洁地球

Chemical Speciation and Bioavailability Pub Date : 2014-01-01 DOI: 10.3184/095422914X14047407349335

C. Rhodes

引用次数: 105

Effects of storage on the sequential extraction of micronutrients and trace elements in fruit and vegetable residue flour 贮藏对果蔬渣粉中微量营养素和微量元素序贯提取的影响

Chemical Speciation and Bioavailability Pub Date : 2014-01-01 DOI: 10.3184/095422914X14142395856286

Luana Sarpa Reis, É. C. A. Gonçalves

引用次数: 2

Preparation of encapsulated urea-kaolinite controlled release fertiliser and their effect on rice productivity 包封尿素-高岭石控释肥的制备及其对水稻生产的影响

Chemical Speciation and Bioavailability Pub Date : 2014-01-01 DOI: 10.3184/095422914X14146901352512

B. Roshanravan, Shahram Mahmoud Soltani, Fariba Mahdavi, Suraya Abdul Rashid, Mohd Khanif Yusop

{"title":"Preparation of encapsulated urea-kaolinite controlled release fertiliser and their effect on rice productivity","authors":"B. Roshanravan, Shahram Mahmoud Soltani, Fariba Mahdavi, Suraya Abdul Rashid, Mohd Khanif Yusop","doi":"10.3184/095422914X14146901352512","DOIUrl":"https://doi.org/10.3184/095422914X14146901352512","url":null,"abstract":"Abstract Urea-intercalated kaolinite containing 20 wt% urea was granulated and coated with water-based epoxy resin to prepare nitrogen-based controlled release fertiliser (NCRF). The nitrogen release property was studied using UV-Vis spectroscopy through the diacetylmonoxim colorimetric method for different samples of granules of urea-intercalated kaolinite and non-intercalated urea–kaolinite mixture. Also the effect of granules size and different coating thickness on nitrogen release from coated NCRFs was investigated. The results of release experiments revealed that intercalation of urea into kaolinite caused a three times decrease in the nitrogen release compared to non-intercalated sample. Also, by increasing the size of granules and thickness of coating, the nitrogen release ratio from NCRFs decreased. Finally, a glasshouse trial was conducted to evaluate the effect of coated urea-kaolinite compared with a non-coated one and conventional urea fertiliser granules on rice productivity (Variety MR 219). The yield together with some yield component data (filled spikelet, spikelet per panicle, productive tiller) revealed a highly significant and positive response to coated CRF N fertiliser treatment (one time application). Also, the pooled data of the yield and yield component emphasised that the rice crop responded significantly to treatments involving CRF nitrogen fertilisers as compared to others. The maximum grain yield of 28.73 g/pot belongs to coated CRF, medium grain yield of around 21.74 g/pot from the non-CRF N fertilisers plots and the lowest yield was obtained where conventional urea was applied. The other morphological and physiological characters show a similar trend to the yield.","PeriodicalId":55264,"journal":{"name":"Chemical Speciation and Bioavailability","volume":"26 1","pages":"249 - 256"},"PeriodicalIF":0.0,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.3184/095422914X14146901352512","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69665338","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 21

Chemical Speciation and Bioavailability: change of publishing arrangements 化学形态和生物利用度:出版安排的变化

Chemical Speciation and Bioavailability Pub Date : 2014-01-01 DOI: 10.3184/095422914x14163264425510

引用次数: 0

Fractionation of heavy metals in contaminated soils surrounding non-ferrous metals smelting area in the North China Plain 华北平原有色金属冶炼区周边污染土壤重金属分馏特征

Chemical Speciation and Bioavailability Pub Date : 2014-01-01 DOI: 10.3184/095422914X13885123689811

Shu-xuan Liang, Xin Wang, Zhan-chen Li, Ning Gao, Hanwen Sun

引用次数: 19