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作者:Andrea Rösch , Birgit Beck , Juliane Hollender ...
来源:[J].Analytical and Bioanalytical Chemistry(IF 3.659), 2019, Vol.411 (14), pp.3151-3164
摘要:... Therefore, selected pyrethroids and organophosphates are listed as priority substances within the European Water Framework Directive with chronic quality criteria in the picogram per liter range. Previously applied analytical methods were unable to detect pyrethroids and o...
作者:Yuxi Zhang , Qunqun Ruan , Yaguang Peng ...
来源:[J].Journal of Colloid And Interface Science(IF 3.172), 2018, Vol.525, pp.39-47
摘要:... The resulting MOFs are characterized by N 2 adsorption-desorption analysis and the results show that the samples have hierarchical-pore structures, which indicate the heat reflux method is efficient for the synthesis of H-UiO-66s on liter scale. In order to test the perfor...
作者:Kamlesh Shrivas , Devesh Kumar Patel
来源:[J].Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy(IF 1.977), 2010, Vol.78 (1), pp.253-257
摘要:Abstract(#br)Drop-to-drop solvent microextraction (DDSME) coupled with matrix assisted laser desorption/ionization mass spectrometry (MALDI-MS) for quantitative determination of nicotinic acid in one drop of urine sample has been proposed. All parameters, such as type of org...
作者:Warren J. Jasper , Srinivasan Rasipuram
来源:[J].Journal of Molecular Liquids(IF 1.684), 2017, Vol.248, pp.920-926
摘要:... At these dimensions (femto and atto liter sized droplets), experimental evidence suggests a flattening of the curve which can be explained by the addition of internal Laplace pressures. This, in turn, indicates that the contact angle for ultra small droplets is less than that...
作者:Jens Tschmelak , Guenther Proll , Guenter Gauglitz
来源:[J].Analytical and Bioanalytical Chemistry(IF 3.659), 2004, Vol.379 (7-8), pp.1004-1012
摘要:... Here we describe the steps of progress toward sub-nanogram per liter detection of propanil with a fully automated immunoassay. In contrast with common analytical methods such as GC–MS or HPLC–MS the biosensor used requires no sample pre-treatment and pre-concentration...
作者:Marta Regina Furlan de Oliveira , Luiz Carlos Migliozzi Ferreira de Mello
来源:[J].Educação: Teoria e Prática, 2017, Vol.27 (54), pp.23-39
摘要:Este artigo objetiva analisar o desenvolvimento das funções psíquicas superiores a partir do texto literário trabalhado em sala de aula. A análise é feita a partir dos fundamentos da Teoria Histórico Cultural em Vygotsky e da Semiótica de linha francesa. Busca-se refle...
作者:Vanessa Neves Riambau Pinheiro
来源:[J].Acta Scientiarum : Language and Culture, 2018, Vol.40 (1), pp.e35720-e35720
摘要:O propósito deste artigo é investigar a formação do sistema literário nos países de Angola e Moçambique. Para o adequado desenvolvimento da pesquisa, dividiremos o estudo em três subáreas: 1. sistema literário: nesta primeira, refletiremos acerca da influência das ...
作者:Christoph Moschet , Etiënne L.M. Vermeirssen , Remo Seiz ...
来源:[J].Water Research(IF 4.655), 2014, Vol.66, pp.411-422
摘要:Abstract(#br)Pyrethroids and organophosphates are among the most toxic insecticides for aquatic organisms, leading to annual-average environmental quality standards (AA-EQS) in the picogram per liter range in surface waters. For monitoring purposes, it is therefore crucial to de...
作者:Laura Mateo-Vivaracho , Juan Cacho , Vicente Ferreira
来源:[J].Journal of Chromatography A(IF 4.612), 2007, Vol.1146 (2), pp.242-250
摘要:Abstract(#br)A fast method for the determination of aroma-powerful polyfunctional thiols at nanogram per liter level has been developed and applied to wine. A small volume of wine (6 mL) was extracted with 1.5 mL of benzene containing four internal standards. Pentafluorobenz...
作者:Yongwen Liu , Xijun Chang , Xiuqin Hu ...
来源:[J].Analytica Chimica Acta(IF 4.387), 2004, Vol.532 (2), pp.121-128
摘要:Abstract(#br)A highly selective β-cyclodextrin polymer solid-phase spectrophotometric (β-CDPSPS) method is described for the determination of total mercury(II) sub microgram per liter. The methods are based on the chromogenic reaction of mercury(II) with 1,3-di-(4-nitrodia...

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