Results 71 to 80 of about 13,634 (233)
Desenvolvimento e aplicação do método Quick, Easy, Cheap, Effective, Rugged, and Safe (QuEChERS) na análise de resíduos de agrotóxicos em água e sedimento. [PDF]
, 2011 bitstream/item/37344/1/Comunicado94 ...
BRONDI, S. H. +3 more
core
Screening of Pesticides and Polycyclic Aromatic Hydrocarbons in Feeds and Fish Tissues by Gas Chromatography Coupled to High-Resolution Mass Spectrometry Using Atmospheric Pressure Chemical Ionization [PDF]
, 2014 This paper reports a wide-scope screening for detection and identification of pesticides and polycyclic aromatic hydrocarbons (PAHs) in feeds and fish tissues. QuEChERS sample treatment was applied, using freezing as an additional cleanup.
Berntssen, Marc H. G. +5 more
core +2 more sources
SlGRF1 mediates gibberellin signaling to control cut‐budding in tomato
Journal of Integrative Plant Biology, EarlyView.Upon wounding, cytokinin increases to initiate callus formation. Gibberellin enhances this, but later blocks bud formation by suppressing SlGRF1. Wounding‐induced protein SlGRF1 triggers buds via NAM1, EPF4, and ER2. Hormonal shifts control cut‐budding phases.
Yaping Xu +7 more
wiley +1 more source
Shipin gongye ke-jiAn analysis method for simultaneous determination of 47 kinds of pesticide residues in tea was established by QuEChERS method combined with ultra performance liquid chromatography-tandem mass spectrometry.
Huawen LIU, Meiqing DENG, Beiyan CHEN
doaj +1 more source
Zhejiang Daxue xuebao. Lixue ban, 2017 建立了超高效液相色谱串联质谱法测定水产品中的红霉素残留量.样品用改进的QuEChERS（快速、简单、廉价、高效、灵活和安全）进行提取净化，经乙腈快速提取，无水硫酸镁和氯化钠除水后，用N-丙基乙二胺(PSA)净化，液相色谱串联质谱分析测定.在ACQUITY UPLC BEH C18色谱柱上进行分离，采用梯度洗脱，以0.1%甲酸水溶液和甲醇为流动相，电喷雾正离子电离，多反应监测模式，内标法定量.结果表明：红霉素浓度在0.5~50 µg • L-1时具有良好的线性关系，相关系数为0.997 6，定量限为0.3
YANZhongyong(严忠雍) +7 more
doaj +1 more source
Zhongguo shipin weisheng zazhi, 2020 Objective To establish a method for the determination of norfloxacin, ciprofloxacin, lomefloxacin, enrofloxacin, ofloxacin and pefloxacin in aquatic products by QuEChERS with ultra performance liquid chromatographytandem mass spectrometry (UPLC-MS/MS ...
Rongxuan XUE +4 more
doaj +1 more source
Shipin gongye ke-ji, 2022 A method was developed for the determination of 14 anabolic androgenic steroids including trenbolone, boldenone and nandrolone in animal derived foods by liquid chromatography-tandem mass spectrometry.
Jing WANG +3 more
doaj +1 more source
Ultra high performance liquid chromatography technique to determine imidacloprid residue in rice using QuEChERS method [PDF]
, 2016 Imidacloprid residue analysis in paddy samples was conducted using the simplified and validated QuEChERS preparation method. Samples were extracted with acetonitrile (ACN) and salts anhydrous magnesium sulphate (MgSO4) and sodium chloride (NaCI) while ...
Chokeli, Raihanah +4 more
core
New Phytologist, EarlyView.Summary Stone cells originate from secondary cell wall thickening and contain abundant lignin. Their excessive accumulation compromises pear fruit quality, yet the endogenous hormonal mechanisms governing stone cell formation remain unclear. Here, co‐expression network analysis using transcriptome data – the flesh of 206 sand pear accessions sampled at
Yanfei Shan +10 more
wiley +1 more source
Analysis of selected organochlorine pesticides in honey samples from Poland: a pilot study
Roczniki Panstwowego Zakladu HigienyBackground Organochlorine pesticides (OCPs) were widely used in crop protection in the past. Due to their high chemical persistence and widespread presence in the environment, they have been classified as persistent organic pollutants (POPs). Given their
Radosław Lewiński +5 more
doaj +1 more source