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| 1 | 铅冶炼污染区小麦籽粒镉含量及低积累品种筛选显示文摘从已有研究看,小麦属于对土壤重金属有较强积累能力的作物,土壤重金属污染区易发生小麦籽粒镉超标现象[1-4]。本研究选择100个小麦品种或品系(其中品种88个,品系为12个),在河南省西北部某铅污染农田中种植,收获后测定籽粒镉含量,以评判河南省铅冶炼污染区小麦籽粒镉积累现状并选出对镉积累程度较低的小麦品种。田间试验于2013年10月到2014年6月间进行。研究区地形为山前平原,海拔约250 m。 | 邢维芹 张红毅 Kirk G.Scheckel 吴龙华 李会勇 Aaron R.Betts 周通 李向东 卢一富 田会阳 李立平 | 2015 | 农业环境科学学报2015，34，10： | 13 |
| 2 | 不同添加剂对铅冶炼污染石灰性土壤的修复及土壤性质的影响研究显示文摘探讨了污水处理厂脱水污泥、枯草和磷矿粉对受铅冶炼污染的石灰性土壤(全Pb、Cd、Zn含量分别为2337、21.4、486 mg·kg-1,DTPA提取态Pb、Cd、Zn含量分别为1035、14.5、68.7 mg·kg-1)中重金属的稳定效果及对土壤性质的影响.其中,污泥和枯草均按200 g·kg-1(干重)的用量施用,磷矿粉按n(P)∶n(Pb)=2∶1比例施用,培养80 d.研究结果表明,单独施用污泥可使土壤DTPA-Pb含量降低18.0%(p<0.05),并可显著降低土壤pH,增加土壤氮、磷有效性和电导率、DTPA-Cd、DTPA-Zn含量,其中,DTPA-Cd、DTPA-Zn含量增加比例均达到10%以上.单独施用枯草可使土壤DTPA-Pb含量降低10.7%(p<0.05),土壤有机质含量增加26.4%(p<0.05),对土壤其它性状影响较小.磷矿粉单独施用时对土壤性质影响较小.与污泥单独施用相比,磷矿粉与污泥配合施用时,可使土壤DTPA-Cd含量降低11.9%. | 邢维芹 历琳 Kirk G.Scheckel Aaron R.Betts 向国强 兰欢 李立平 | 2014 | 环境科学学报2014，34，6： | 7 |
| 3 | 添加剂对伴矿景天修复石灰性铅冶炼污染土壤的影响显示文摘为了探讨利用伴矿景天(Sedum plumbizincicola)修复北方重金属污染土壤的可行性,在河南省某铅冶炼形成的污染农田(全镉、铅和锌含量分别为2.65、261和130 mg·kg-1)上种植种子苗或扦插苗伴矿景天,并设对照(CK)、单独尿素(U)、尿素和单质硫(U+S)、尿素与鸡粪(U+CM)配合处理,生长7个月后采样分析.结果表明,种子苗产量比扦插苗高45.8%~162.0%,U、U+CM处理产量均明显高于CK,而U+S处理产量有所下降.种子苗地上部镉含量比扦插苗高15%~99%(p<0.05),多数处理铅和锌含量也是种子苗高于扦插苗.与CK相比,各处理措施均导致伴矿景天地上部镉和铅含量下降,而U+S、U+CM处理均导致伴矿景天地上部锌含量上升.从伴矿景天地上部重金属积累量判断,与CK相比,对于镉,仅种子苗U+CM处理镉积累量有所上升;U处理种子苗和扦插苗地上部锌积累量分别比CK上升43.5%和32.3%,两种苗U+S处理锌积累量比CK分别上升11.1%和22.3%.种子苗和扦插苗地上部镉的积累量分别为137~178 g·hm-2和43.7~64.8 g·hm-2,锌的积累量分别为297~1042 g·hm-2和162~326 g·hm-2,两类苗对铅的积累量小于28.8 g·hm-2.U+CM处理对伴矿景天地上部锌吸收的促进作用主要是由于鸡粪中含有大量的有效锌.以上结果表明,可利用种子苗伴矿景天结合尿素的施用对铅冶炼污染石灰性土壤进行修复. | 李立平 田会阳 卢一富 张红毅 吴龙华 Kirk G.Scheckel 邢维芹 | 2015 | 环境科学学报2015，35，6： | 6 |
| 4 | 钙、氯对磷酸盐稳定污染土壤中铅的促进作用研究显示文摘为探讨促进磷酸盐稳定污染土壤中铅的方法,在全铅含量为517 mg·kg-1的铅冶炼污染土壤中加入5 mmol·kg-1磷酸盐,同时加入10mmol·kg-1硝酸钙或5 mmol·kg-1氯化钾,在15%或30%的含水率下培养40 d,之后种植黑麦草.结果表明,与单独施用磷酸盐相比,采用磷酸盐与钙、氯结合或增加培养期间的土壤含水率后,土壤DTPA-Pb含量下降3.92%~26.1%;对于同一添加剂处理,培养期间土壤含水率从15%增加到30%,土壤有效铅(DTPA-Pb)含量下降8.83%~24.4%.增加土壤含水率后,土壤有效磷(Olsen-P)含量均显著升高(p<0.05).土壤铅的EXAFS分析表明,与未施用磷酸盐的对照相比,土壤中加入磷酸盐后矿物态铅的比例由57%上升至81%,加施钙、氯或增加土壤含水率后,多数处理矿物态铅的比例有所下降,而有机结合态铅比例上升.与对照相比,污染土壤中施用磷酸盐后,植物产量大幅增加,但施用钙、氯或增加培养期间含水率后,部分处理植物产量有所下降.以上结果表明,在铅冶炼污染土壤中加入磷酸盐时,加入钙、氯或者增加土壤含水率均有利于铅的稳定,但以上措施可能对植物生长产生不利影响. | 李立平 赵强 张红毅 Kirk G.Scheckel 郑黎荣 邢维芹 | 2017 | 环境科学学报2017，37，11： | 3 |
| 5 | Nutrient alterations following biochar application to a Cd-contaminated solution and soil显示文摘Biochars,when applied to contaminated solutions or soils,may sequester potentially toxic elements while releasing neces-sary plant nutrients.This purpose of this study focused on quantifying both phenomenon following wheat straw(Triticum aestivum L.)biochar application(0,5,and 15%by wt)to a Cd containing solution and a Cd-contaminated paddy soil using 240-day laboratory batch experiments.Following both experiments,solid phases were analyzed for elemental associations using a combination of wet chemical sequential extractions and synchrotron-based X-ray absorption spectroscopy(XAS).When wheat straw biochar was applied at 15%to Cd containing solutions,Cd and Zn concentrations decreased to below detection in some instances,Ca and Mg concentrations increased by up to 290%,and solution pH increased as compared to the 5%biochar application rate.Similar responses were observed when biochar was added to the Cd-contaminated paddy soil,suggesting that this particular biochar has the ability to sequester potentially toxic elements while releasing necessary plant nutrients to the soil solution.When significant,positive correlations existed between nutrient release over time,while negative correlations were present between biochar application rate,potentially toxic element sorption and pH.The latter suggests that potentially toxic elements were sorbed by a combination of organic functional groups or mineral precipitation based on whether pH was above or below~7.In support of this contention,the wet chemical sequential extraction procedure in conjunction with previously observed Cd or current Zn XAS showed that biochar application promoted the formation of layered double hydroxides,sorption to(oxy)hydroxides,and organically bound to biochar as Zn species.As a multi-functional material,biochar appears to play an important role in sequestering Cd while releasing essential plant nutrients.These findings suggest that biochar may be a‘win-win’for improving environmental quality in potentially toxic element contaminated agroecosystems. | Liqiang Cui James A.Ippolito Matt Noerpel Kirk G.Scheckel Jinlong Yan | 2021 | Biochar2021，3，4： | 0 |
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