Abstract：
:A simple and rapid method based on high-performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS) was developed for the simultaneous determination of imidacloprid and chlorfenapyr residues in chieh-qua. Field trials were designed to investigate the dissipation and terminal residue behavior of the mixed formulation of imidacloprid and chlorfenapyr in chieh-qua in Guangzhou and Nanning areas. Risk assessment was performed by calculating the risk quotient (RQ) values. The developed analytical method exhibited recoveries of 89.9-110.3% with relative standard deviations (RSDs) of 2.8-12.5% at the spiked levels of 0.01, 0.10, and 1.00 mg/kg. The limit of detection (LOD) was 0.003 mg/kg, and the limit of quantification (LOQ) was 0.01 mg/kg for both imidacloprid and chlorfenapyr. It was found that the half-lives of imidacloprid in chieh-qua under field conditions were 3.3 and 3.5 days in Guangzhou and Nanning at a dose of 180 g ai/ha, while the half-lives of chlorfenapyr were 3.3 and 2.6 days, respectively. The terminal residues of imidacloprid and chlorfenapyr were from 0.01 to 0.21 mg/kg and from 0.01 to 0.46 mg/kg, respectively. Results of dietary exposure assessment showed that the RQ values were much lower than 1, indicating that the risk of imidacloprid and chlorfenapyr applied in chieh-qua was negligible to human health under recommended dosage and good agricultural practices. The proposed study would provide guidance for safe and reasonable use of imidacloprid and chlorfenapyr in chieh-qua cultivation in China.
journal_name
Environ Monit Assessjournal_title
Environmental monitoring and assessmentauthors
Huang JX,Liu CY,Lu DH,Chen JJ,Deng YC,Wang FHdoi
10.1007/s10661-015-4846-2subject
Has Abstractpub_date
2015-10-01 00:00:00pages
650issue
10eissn
0167-6369issn
1573-2959pii
10.1007/s10661-015-4846-2journal_volume
187pub_type
杂志文章abstract：:This study investigates the assessment of uncertainty contribution in projected changes of high and low flows from parameterization of a hydrological model and inputs of ensemble regional climate models (RCM). An ensemble of climate projections including 15 global circulation model (GCM)/RCM combinations and two bias ...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-017-6059-3
更新日期：2017-07-01 00:00:00
abstract：:The concentration of 11 elements, Ba, Cd, Cr, Cu, Fe, Mg, Mn, Ni, Pb, Zn and V, have been determined in leaves of Ligistrum lucidum Ait. f. growing in Palermo, by simultaneous inductively coupled plasma mass spectrometry. A total of 72 samples from six different sites were investigated to deduce the bioindicator abili...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1023/b:emas.0000031729.62970.fa
更新日期：2004-08-01 00:00:00
abstract：:Ria de Aveiro is a Portuguese lagoon renowned for its ecological and economic importance. Nonetheless, in literature, few data exist about its organic pollution. Accordingly, this study chemically monitored for the first time a series of 17 endocrine disruptor compounds (EDCs). The target EDCs include natural (17β-oes...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-016-5114-9
更新日期：2016-02-01 00:00:00
abstract：:Most resource professionals in British Columbia recognize the value of ecosystem classification in providing a conceptual framework and common language for organizing ecological information and management experience about ecosystems.Ecosystem mapping utilizes principles of ecosystem classification in order to provide ...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/BF00396139
更新日期：1996-01-01 00:00:00
abstract：:Particles in a dental office can be generated by a number of instruments, such as air-turbine handpieces, low-speed handpieces, ultrasonic scalers, bicarbonate polishers, polishing cups, as well as drilling and air sprays inside the oral cavity. This study examined the generation of particles during dental drilling an...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-007-9770-7
更新日期：2008-02-01 00:00:00
abstract：:One of the most important hydrogeologic problems in and adjacent areas of evaporitic formations is severe quality degradation of groundwaters. These kinds of groundwaters contain high content of dissolved solids and generally have some limitations for use. Tatlicay basin (north-central Turkey) is an example to effects...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-011-2121-8
更新日期：2012-04-01 00:00:00
abstract：:Nano-size calcium peroxide (nCaO2) is an appropriate oxygen source which can meet the needs of in situ chemical oxidation (ISCO) for contaminant remediation from groundwater. In the present study, an easy to handle procedure for synthesis of CaO2 nanoparticles has been investigated. Modeling and optimization of synthe...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-017-6157-2
更新日期：2017-08-14 00:00:00
abstract：:The present investigation was done to evaluate the effects of ambient air pollutants on physiological and biochemical characteristics of radish (Raphnus sativa L. var. Pusa Reshmi) and brinjal (Solanum melongena L. var. Pusa hybrid-6) plants grown in open-top chambers with filtered (FCs) and non-filtered (NFCs) treatm...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-010-1542-0
更新日期：2011-04-01 00:00:00
abstract：:The use of native plants was examined in three rural communities in the semi-arid of the state of Pernambuco, in northeastern Brazil. The techniques employed in the present study combined a number of different techniques of data-gathering, including semi-structured interviews, guided tour, key-informants, and particip...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-006-9521-1
更新日期：2007-02-01 00:00:00
abstract：:This investigation aimed to assess the impacts of integrated industrial wastewater (IIW) irrigation on soil properties in the rural area of Haridwar, India, under cultivation of a leafy vegetable, i.e., spinach (Spinacia oleracea). Based on the field data of two cropping years (2016-2017 and 2017-2018), soil character...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-020-08673-9
更新日期：2020-10-17 00:00:00
abstract：:Köyceğiz Lake is located in the south-western part of Turkey. The area between the Köyceğiz Lake and the Mediterranean Sea is covered with four small lakes and several canals. The surroundings of the lake, canals and forests have a great potential as a reproduction areas for Mediterranean Sea turtles (Caretta caretta)...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-008-0555-4
更新日期：2009-10-01 00:00:00
abstract：:The biological marine system in the Mediterranean Sea off Alexandria, Egypt, was investigated to recognise its biodiversity and the relations among "ichthyofauna, invertebrates, and benthic" cover including biota and flora, as well as seabed bathymetry during 2017 using a multi-seasonal surveys by the commercial botto...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-019-7471-7
更新日期：2019-05-15 00:00:00
abstract：:In this work, spectrophotometer was used as a detector for the determination of uranium from water, biological, and ore samples with a flow injection system coupled with solid phase extraction. In order to promote the online preconcentration of uranium, a minicolumn packed with XAD-4 resin impregnated with nalidixic a...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-012-2655-4
更新日期：2013-02-01 00:00:00
abstract：:We present data on the distributional changes within an order of macroinvertebrates used in biological water quality monitoring. The British Odonata (dragonflies and damselflies) have been shown to be expanding their range northwards and this could potentially affect the use of water quality metrics. The results show ...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-008-0709-4
更新日期：2010-01-01 00:00:00
abstract：:Trichodesmium, a marine cyanobacterium, plays a significant role in the global nitrogen cycle due to its nitrogen fixing ability. Large patches of Trichodesmium blooms were observed in the coastal waters, off Goa during spring intermonsoon (SIM) of 2014-2018. Zeaxanthin was the dominant pigment in the bloom region. He...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-020-08494-w
更新日期：2020-07-16 00:00:00
abstract：:Hg(II) Retention capacities of nine bryophyte species, collected from Jinfo Mountains (JFM) in Chongqing, China, had been investigated with special reference to the effect of morphology and elevation of moss growth. Results indicated that adsorption capacities of bryophytes for Hg(II) became stronger with the increase...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-006-9594-x
更新日期：2007-10-01 00:00:00
abstract：:Soil contamination by heavy metals has become a serious problem mainly because, above certain concentrations, all metals have adverse effects on human health. In particular, the accumulation of heavy metals in agricultural soils leads to elevated uptake by crops and affects food quality and safety. In this paper, we p...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-012-2997-y
更新日期：2013-07-01 00:00:00
abstract：:Suspended particulate matter (SPM), sediments and clams were collected at three sites in Jiaozhou Bay to assess the magnitude of trace metal pollution in the area. Metal concentrations in SPM (Cu: 40.11-203; Zn: 118-447; Pb: 50.1-132; Cd: 0.55-4.39; Cr: 147.6-288; Mn: 762-1670 microg/g), sediments (Cu: 17.64-34.26; Zn...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-005-9149-6
更新日期：2006-10-01 00:00:00
abstract：:To abate the severe acidification of Swedish lakes are about 7% directly limed (AL-lakes). These are important to include when assessing acidification. Consequently, we need to estimate their chemical status as if they were not lime-affected. We hypothesize that there is a spatial dependence for calcium (Ca) and magne...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-005-9029-0
更新日期：2006-08-01 00:00:00
abstract：:Continual, historical, and accurate information about the land use/land cover (LULC) changes of the earth's surface is extremely important for sustainable management of natural resources. In this study, historical topographic sheets, IRS P6 LISS-III, and LANDSAT TM images were used to provide recent and historical LUL...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-019-7447-7
更新日期：2019-04-29 00:00:00
abstract：:Climate change and the intensification of anthropogenic activities in watersheds have been substantially changing the streamflow regime, which is a problem for water resource managers. This study assesses the influence of the changes in land use and land cover and rainfall on the streamflow regime. This study also mod...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-020-08782-5
更新日期：2021-01-02 00:00:00
abstract：:In this study, a new analytical strategy was developed to determine trace cadmium in aqueous samples with high sensitivity and accuracy. A combination of magnetic nickel nanoparticles (Ni-MNPs) based dispersive solid-phase extraction (DSPE) and flame atomic absorption spectrometry fitted with a slotted quartz tube (SQ...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-020-08548-z
更新日期：2020-08-15 00:00:00
abstract：:Though not litigable in most European countries, portable X-ray fluorescence spectrometers (pXRF) provide cost- and time-effective as well as prompt information about hot spots of inorganic soil contaminants. The quality of aqua regia analysis of contaminants can be approximated by a thorough sample preparation, i.e.,...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-019-7869-2
更新日期：2019-10-24 00:00:00
abstract：:An objective methodology is presented for determining the number and disposition of ambient air quality stations in a monitoring network for the primary purpose of compliance with air quality standards. The methodolgy utilizes a data base with real or simulated data from an air quality dispersion model for application...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/BF00394284
更新日期：1986-01-01 00:00:00
abstract：:Water samples were collected in the Pearl River Estuary in July 2002 and April 2003. The particulate and dissolved phase polycyclic aromatic hydrocarbons (PAHs) were determined. Total PAH concentrations in water samples were higher in April of 2003 (C (p): 4.0-39.1 ng/L or 445.1-1,089.9 ng/g; C (w): 15.9-184.2 ng/L) t...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-007-0051-2
更新日期：2008-10-01 00:00:00
abstract：:Geostatistical variogram and inversion techniques combined with modern visualization tools have made it possible to re-model one-dimensional electrical resistivity data into two-dimensional (2D) models of the near subsurface. The resultant models are capable of extending the original interpretation of the data to depi...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-014-3876-5
更新日期：2014-10-01 00:00:00
abstract：:Tehran is one of the megacities of the world with a population of over eight million. Its air is highly polluted mainly due to the suspended particulate matters, which encompasses a wide spectrum of chemical elements. These elements based on their type, size, and impact on the life cycle have various environmental and...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-009-0850-8
更新日期：2010-04-01 00:00:00
abstract：:Seed germination is considered a critical phase in plant development and relatively sensitive to heavy metals. White poplar (Populus alba) trees tend to accumulate Cd and Zn in their tissues. We tested if soil contamination can affect P. alba progeny, reduced seed germination and explored the distribution of mineral e...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-015-4893-8
更新日期：2015-11-01 00:00:00
abstract：:The heavy metal concentrations of soil and dust samples from roadside, residential areas, parks, campus sport grounds, and commercial sites were studied in Guangzhou, South China. Heavy metals in samples were determined by inductively coupled plasma atomic emission spectrophotometer following acidic digestion with HCl...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-012-2617-x
更新日期：2013-02-01 00:00:00
abstract：:In this study, artificial neural networks (ANNs) including feed forward back propagation neural network (FFBP-NN) and the radial basis function neural network (RBF-NN) were applied to predict daily sewage sludge quantity in wastewater treatment plant (WWTP). Daily datasets of sewage sludge have been used to develop th...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-019-7196-7
更新日期：2019-02-16 00:00:00
