Chemical Speciation and Bioavailability最新文献_第2页

Application of activated charcoal and nanocarbon to callus induction and plant regeneration in aromatic rice (Oryza sativa L.) 活性炭和纳米炭在芳香水稻愈伤组织诱导和植株再生中的应用

Chemical Speciation and Bioavailability Pub Date : 2018-01-01 DOI: 10.1080/09542299.2017.1418184

S. Chutipaijit, T. Sutjaritvorakul

{"title":"Application of activated charcoal and nanocarbon to callus induction and plant regeneration in aromatic rice (Oryza sativa L.)","authors":"S. Chutipaijit, T. Sutjaritvorakul","doi":"10.1080/09542299.2017.1418184","DOIUrl":"https://doi.org/10.1080/09542299.2017.1418184","url":null,"abstract":"Abstract The investigations of nanotechnology with the application on agricultural products also have been few reported, especially the plant regeneration. The effects of activated charcoal and nanocarbon on the callus induction and plant regeneration of aromatic rice were studied. Activated charcoal was added into the callus induction and regeneration medium. The presence of activated charcoal in the callus induction medium (100–500 mg L−1), activated charcoal significantly reduced the percentage of the callus induction and biomass accumulation (fresh weight, dry weight and size). Whereas, the regeneration medium supplemented with 100 mg L−1 of activated charcoal showed the highest percentage of plant regeneration (61.90%) and the ratio of the number of seedlings to the number of regenerated calli (RSR; 3.06) that derived from the callus induction medium (without activated charcoal). Moreover, the induced calli derived from the callus induction medium supplemented with nanocarbon at 5 mg L−1 showed the highest percentage of callus induction (94.70%), the percentage of green spots (95.83%), the percentage of plant regeneration (60.42%) and the RSR (3.12) when transferred the calli into the regeneration medium (without nanocarbon). After that, nanocarbon was also added into the regeneration medium. The percentage of green spots (96.08%), the percentage of plant regeneration (62.75%) and the RSR (3.16) obtained from the regeneration medium supplemented with 20 mg L−1 of nanocarbon showed the highest values. This experiment showed that the optimum concentration of activated charcoal and nanocarbon had potential to enhance the callus induction and plant regeneration frequencies in tissue culture medium of aromatic rice.","PeriodicalId":55264,"journal":{"name":"Chemical Speciation and Bioavailability","volume":"30 1","pages":"1 - 8"},"PeriodicalIF":0.0,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/09542299.2017.1418184","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42573979","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

Spatial and temporal trends in total organic carbon (TOC), black carbon (BC), and total nitrogen (TN) and their relationships under different planting patterns in a restored coastal mangrove wetland: case study in Fujian, China 不同种植模式下滨海红树林湿地总有机碳（TOC）、黑碳（BC）和总氮（TN）的时空变化趋势及其关系——以福建为例

Chemical Speciation and Bioavailability Pub Date : 2018-01-01 DOI: 10.1080/09542299.2018.1484673

P. Guo, Yinshi Sun, H. Su, Meixian Wang, Yuxuan Zhang

引用次数: 9

Trace metal speciation in a wastewater wetland and its bioaccumulation in tilapia Oreochromis niloticus 污水湿地中微量金属形态及其在罗非鱼体内的生物积累

Chemical Speciation and Bioavailability Pub Date : 2018-01-01 DOI: 10.1080/09542299.2018.1452635

G. Aldana, M. Hernández, S. Cram, O. Arellano, O. Morton, C. A. Ponce de León

引用次数: 5

Thallium pollution and potential ecological risk in the vicinity of coal mines in Henan Province, China 河南煤矿附近铊污染及其潜在生态风险

Chemical Speciation and Bioavailability Pub Date : 2018-01-01 DOI: 10.1080/09542299.2018.1513820

Chengli Zhang, S. Ren, Hongdan Cheng, Weiping Zhang, Jianhua Ma, Chaosheng Zhang, Zhiyong Guo

{"title":"Thallium pollution and potential ecological risk in the vicinity of coal mines in Henan Province, China","authors":"Chengli Zhang, S. Ren, Hongdan Cheng, Weiping Zhang, Jianhua Ma, Chaosheng Zhang, Zhiyong Guo","doi":"10.1080/09542299.2018.1513820","DOIUrl":"https://doi.org/10.1080/09542299.2018.1513820","url":null,"abstract":"ABSTRACT This study was aimed to analyze the thallium pollution and assess the potential ecological risks in the vicinity of coal mines in Henan province, China. We studied 90 surface farmland soil samples from 9 representative coal mines. The Tl concentrations were determined and the potential ecological risks were evaluated. Investigations revealed the farmland soils were modestly contaminated and the trace elements in coal mining areas transferred to the surface soils. Soil Tl contents and potential ecological risks in coal mining areas were significantly increased compared with the original soils which came from the villagers’ mud houses built 40 years ago. The soil Tl concentrations ranged from 0.25 to 0.77(mean = 0.46) mg∙kg−1, which were higher than the original level (0.42 mg∙kg−1). The potential ecological risk index of Tl ranged from 24.00 to 73.2 (mean 44.08), representing a moderate pollution level as a whole of the soils in Henan. In general, high Tl concentrations and high potential ecological risk were found around SHQ and DTG. The soil Tl concentrations exceed the original level and pose noticeable ecological risks.","PeriodicalId":55264,"journal":{"name":"Chemical Speciation and Bioavailability","volume":"30 1","pages":"107 - 111"},"PeriodicalIF":0.0,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/09542299.2018.1513820","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48213287","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: 11

Combined effects of straw-derived biochar and bio-based polymer-coated urea on nitrogen use efficiency and cotton yield 秸秆生物炭和生物基聚合物包膜尿素对氮素利用效率和棉花产量的联合效应

Chemical Speciation and Bioavailability Pub Date : 2018-01-01 DOI: 10.1080/09542299.2018.1518730

Xiaojing Yu, Xiaofei Tian, Yanyan Lu, Zhiguang Liu, Yanle Guo, Jianqiu Chen, Chengliang Li, Min Zhang, Y. Wan

{"title":"Combined effects of straw-derived biochar and bio-based polymer-coated urea on nitrogen use efficiency and cotton yield","authors":"Xiaojing Yu, Xiaofei Tian, Yanyan Lu, Zhiguang Liu, Yanle Guo, Jianqiu Chen, Chengliang Li, Min Zhang, Y. Wan","doi":"10.1080/09542299.2018.1518730","DOIUrl":"https://doi.org/10.1080/09542299.2018.1518730","url":null,"abstract":"ABSTRACT The interactive effects of straw-derived biochar and bio-based polymer-coated urea (BPCU) was examined with a pot experiment conducted in 2014 and 2015. Using a split-plot design, the main plot factor was the form of straw use and the sub-plot factor was the type of N fertilizer. The soil inorganic nitrogen (N), organic carbon and lint yield of biochar treatments were significantly higher than for straw treatments. Meanwhile, the BPCU treatments enhanced nitrogen use efficiency (NUE) and yield over urea treatments. Biochar combined with BPCU resulted in the highest lint yield, 14.3–108.2% increasing over the other treatments, with NUE 27.1–63.5% increased. We attributed this superior performance to the interactive effects between BPCU’s controlled supply of N according to cotton’s N requirements and biochar’s functionalities in enhancing soil quality. Thus, the application of biochar and BPCU is a sustainable strategy to improve soil quality and increase cotton yield.","PeriodicalId":55264,"journal":{"name":"Chemical Speciation and Bioavailability","volume":"30 1","pages":"112 - 122"},"PeriodicalIF":0.0,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/09542299.2018.1518730","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42309564","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: 10

Characteristics of nutrient release from sediments under different flow conditions 不同流动条件下沉积物养分释放特征

Chemical Speciation and Bioavailability Pub Date : 2017-01-01 DOI: 10.1080/09542299.2017.1320950

Zhongbo Yu, Xiaoyang Zhong, Cong-rong Yu, Chuanhai Wang, Peiyi Duan, Lei Wen, Yang You

{"title":"Characteristics of nutrient release from sediments under different flow conditions","authors":"Zhongbo Yu, Xiaoyang Zhong, Cong-rong Yu, Chuanhai Wang, Peiyi Duan, Lei Wen, Yang You","doi":"10.1080/09542299.2017.1320950","DOIUrl":"https://doi.org/10.1080/09542299.2017.1320950","url":null,"abstract":"Abstract Contaminated sediments, as a secondary pollution source in rivers and lakes, are of critical importance to water quality. More and more attention thus has been paid to understand the release mechanisms of nutrients from river sediments, especially in estuary and water transfer areas. In this work, flume experiments were conducted to measure the release characteristics of total dissolved phosphorus (TDP) and nitrogen (TDN) from sediments collected from a river bed near Lake Tai under various flow conditions. The release of TDP and TDN was the most dramatic in the initial 30 min, then slowed down from 30 to 60 min, and finally achieved equilibria. Total amount of TDP and TDN released and their equilibrium concentrations were all significantly increased with the increase of flow rate, but slow down after a critical velocity was reached, which could be described as a Logarithmic relationship. A process-based mathematical model was established to describe the distribution of nutrients in the water columns and model simulations matched experimental data well. The re-suspension of sediments induced by flow rate higher than the threshold, is the dominant process affecting nutrient release from sediments.","PeriodicalId":55264,"journal":{"name":"Chemical Speciation and Bioavailability","volume":"29 1","pages":"70 - 77"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/09542299.2017.1320950","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48501687","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: 4

Solid phase speciation of Zn and Cd in zinc smelter effluent-irrigated soils 锌冶炼废水灌溉土壤中锌和镉的固相形态

Chemical Speciation and Bioavailability Pub Date : 2017-01-01 DOI: 10.1080/09542299.2016.1247656

P. Ray, S. Datta

{"title":"Solid phase speciation of Zn and Cd in zinc smelter effluent-irrigated soils","authors":"P. Ray, S. Datta","doi":"10.1080/09542299.2016.1247656","DOIUrl":"https://doi.org/10.1080/09542299.2016.1247656","url":null,"abstract":"Abstract Solubility of metal in contaminated soils is a key factor which controls the phytoavailability and toxic effects of metals on soil environment. The chemical equilibria of metal ions between soil solution and solid phases govern the solubility of metals in soil. Hence, an attempt was made to identify the probable solid phases (minerals), which govern the solubility of Zn2+ and Cd2+ in zinc smelter effluent-irrigated soils. Estimation of free ion activities of Zn2+ (pZn2+) and Cd2+ (pCd2+) by Baker soil test indicated that metal ion activities were higher in smelter effluent-irrigated soils as compared to that in tubewell water-irrigated soils. Identification of solid phases further reveals that free ion activity of Zn2+ and Cd2+ in soil highly contaminated with Zn and Cd due to long-term irrigation with zinc smelter effluent is limited by the solubility of willemite (Zn2SiO4) in equilibrium with quartz and octavite (CdCO3), respectively. However, in case of tubewell water-irrigated soil, franklinite (ZnFe2O4) in equilibrium with soil-Fe and exchangeable Cd are likely to govern the activity of Zn2+ and Cd2+ in soil solution, respectively. Formation of highly soluble minerals namely, willemite and octavite indicates the potential ecological risk of Zn and Cd, respectively in smelter effluent irrigated soil.","PeriodicalId":55264,"journal":{"name":"Chemical Speciation and Bioavailability","volume":"29 1","pages":"14 - 6"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/09542299.2016.1247656","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44737706","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: 9

Application of stable isotopes to examine N proportions within a simulated Aegiceras corniculatum wetland 应用稳定同位素检测模拟飞花Aegiceras湿地中氮的比例

Chemical Speciation and Bioavailability Pub Date : 2017-01-01 DOI: 10.1080/09542299.2017.1339573

S. Miao, Weilin Chen, W. Tao, Wen-Hong Dai, Liandi Long, Jinling Huang

{"title":"Application of stable isotopes to examine N proportions within a simulated Aegiceras corniculatum wetland","authors":"S. Miao, Weilin Chen, W. Tao, Wen-Hong Dai, Liandi Long, Jinling Huang","doi":"10.1080/09542299.2017.1339573","DOIUrl":"https://doi.org/10.1080/09542299.2017.1339573","url":null,"abstract":"Abstract Salinity levels and drought status of coastal wetlands may be strongly affected by climate change, and changes in the nitrogen cycle of mangrove wetlands may also be affected. We established combinations of three salinity and water levels with applied stable isotope 15N to study the δ15N distributions in the sediment and plants of a greenhouse-based simulated mangrove Aegiceras corniculatum wetland system. The stable isotope 13C and 15N, C and N contents and the C:N ratio were determined. Results showed that increasing in salinity significantly increased the δ13C value in plant organs. The δ15N value of plant organs increased with increasing water level in low salinity (10‰) and medium salinity (20‰) treatment groups but not in the high salinity (30‰) treatment group. This may attributed to A. corniculatum adjusting the δ15N distribution in different organs in response to high salinity stress. Compared to the δ13C, the δ15N values of plant were strongly affected by salinity and water level treatments, indicating that the behavior of N cycle was somewhat different than the C cycle, and affected by the combined effects of both salinity and water level. Most of 15N absorbed by plant tissues were in leaves except for the highest salinity and high water level treatment, showing at increasing water level, the proportion of 15N increased in root. Overall, the measured indicators exhibited different responses to salinity level and water level, suggesting that the changes in salinity and water levels have an impact on N cycling processes of wetland systems.","PeriodicalId":55264,"journal":{"name":"Chemical Speciation and Bioavailability","volume":"29 1","pages":"109 - 97"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/09542299.2017.1339573","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44942005","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: 4

Spatial distribution of total halogenated organic compounds (TX), adsorbable organic halogens (AOX), and heavy metals in wetland soil irrigated with pulp and paper wastewater 纸浆造纸废水灌溉湿地土壤中总卤化有机化合物(TX)、可吸附有机卤素(AOX)和重金属的空间分布

Chemical Speciation and Bioavailability Pub Date : 2017-01-01 DOI: 10.1080/09542299.2016.1252692

Liqiang Cui, Tianming Chen, C. Ding, Zhaoxia Li, Jinlong Yan, Yang Liu, Xian Niu, Aihui Chen, Wenjun Yang

{"title":"Spatial distribution of total halogenated organic compounds (TX), adsorbable organic halogens (AOX), and heavy metals in wetland soil irrigated with pulp and paper wastewater","authors":"Liqiang Cui, Tianming Chen, C. Ding, Zhaoxia Li, Jinlong Yan, Yang Liu, Xian Niu, Aihui Chen, Wenjun Yang","doi":"10.1080/09542299.2016.1252692","DOIUrl":"https://doi.org/10.1080/09542299.2016.1252692","url":null,"abstract":"Abstract Long-term irrigation using wastewater from paper industry may cause seriously problems to the receiving soil. This work surveyed and monitored the soil quality of a wastewater irrigation wetland system in Yancheng City, Jiangsu Province in China in 2014 and 2015. Τhe wetland soil showed different soil properties and TX, AOX, heavy metal contents after long-term wastewater irrigation. Long-term irrigation also accumulated the heavy metals such as Cu, Cd, Zn, and Pb in the wetland soil. Compared to the control, TX in the irrigated soil increased by 47.7–69.8% (2014) and 61.5–83.1% (2015). AOX varied in concentration from 1.7 to 55.0 mg kg−1 (2014) and 11.0 to 53.0 mg kg−1 (2015). The long-term irrigation of wastewater to wetland systems caused the accumulations of heavy metals, TX, and AOX in the soil and the levels of accumulations were related to several factors including soil properties, wastewater quality, and irrigation time.","PeriodicalId":55264,"journal":{"name":"Chemical Speciation and Bioavailability","volume":"29 1","pages":"15 - 24"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/09542299.2016.1252692","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45173675","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: 13

Speciation and dynamics of phosphorus in some organically amended soils of southwestern Nigeria 尼日利亚西南部有机改良土壤中磷的形态和动态

Chemical Speciation and Bioavailability Pub Date : 2017-01-01 DOI: 10.1080/09542299.2017.1287549

A. Soremi, M. Adetunji, J. Azeez, C. Adejuyigbe, J. Bodunde

{"title":"Speciation and dynamics of phosphorus in some organically amended soils of southwestern Nigeria","authors":"A. Soremi, M. Adetunji, J. Azeez, C. Adejuyigbe, J. Bodunde","doi":"10.1080/09542299.2017.1287549","DOIUrl":"https://doi.org/10.1080/09542299.2017.1287549","url":null,"abstract":"Abstract Availability of soil phosphorus (P) is a function of its dynamics and can be improved by using organic amendments. Experiments were carried out to determine the effect of poultry manure (PM) on soil P fractions and bioavailability to soybean (Glycine max). Soils from ten farmers’ fields in Southwest Nigeria, were used for incubation and pot experiments. Treatments were five rates of PM (0, 2.5, 5.0, 7.5 and 10 t ha−1). Triplicate units in incubation and pot experiments were arranged in Completely Randomised Design. Soybean was grown for three consecutive growth cycles of seven weeks each and soil samples were analysed for Saloid P, Al-P, Fe-P, Ca-P, occluded P, reductant soluble P, and residual P. Results indicated that Fe-P was the dominant active inorganic P in the soils while residual P was the dominant inactive inorganic-P in most of the soils. In the pot experiment, application of poultry manure significantly increased organic P in the soils in the first growth cycle, but decreased slightly in second growth cycle. Highest and lowest (P ≤ 0.05) organic P values were observed in soil samples from Ayetoro and Odeda, respectively. In the pot experiment, application of PM reduced P fixation and occluded P fraction in the soils. There was general increase in available P in most of the soils considered despite increase or decrease in other forms of P. Poultry manure reduced the fixation of P and release of occluded phosphorus. Generally, Poultry manure significantly improved soil P fractions and plant P tissue concentrations.","PeriodicalId":55264,"journal":{"name":"Chemical Speciation and Bioavailability","volume":"29 1","pages":"42 - 53"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/09542299.2017.1287549","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47598271","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: 12