Determination of endocrine disrupting compounds in environmental samples using microextraction combined with gas chromatography mass spectrometry
Determination of endocrine disrupting compounds in environmental samples using microextraction combined with gas chromatography mass spectrometry
... DETERMINATION OF ENDOCRINE DISRUPTING COMPOUNDS IN ENVIRONMENTAL SAMPLES USING MICROEXTRACTION COMBINED WITH CHROMATOGRAPHY/ MASS SPECTROMETRY CHANBASHA BASHEER ... Balasubramanian, H K Lee Determination of organic micropollutants in rainwater using hollow fiber membrane/liquid-phase microextraction combined with gas chromatography mass spectrometry, J CHROMATOGR ... GENERAL DISRUPTING INTRODUCTION CHEMICALS MICROANALYTICAL TECHNIQUES TO AND 1.1 General introduction to endocrine disrupting compounds The issue of endocrine disrupting compounds (EDCs) in the environment...
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Removal of endocrine disrupting compounds in municipal wastewater by membrane bioreactor (MBR) systems
... REMOVAL OF ENDOCRINE DISRUPTING COMPOUNDS IN MUNICIPLE WASTEWATER BY MEMBRANE BIOREACTOR SYSTEMS CHEN XIA (B Eng., Tongji Univ.; M Sc., Stuttgart Unv.) A THESIS SUBMITTED FOR THE DEGREE OF ... contains thousands of compounds Some of the synthetic organic compounds that are common in treated wastewater have been shown in laboratory studies to induce endocrine disrupting effects These endocrine ... in literature, there is a general lack of fundamental understanding in terms of removal of EDCs by MBRs in a real wastewater Chapter One: Introduction matrix More specifically, the removal kinetics...
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A NATIONWIDE SURVEY OF ENDOCRINE DISRUPTING CHEMICALS IN SOURCE AND DRINKING WATERS IN JAPAN
... treatment plants are conducting periodical monitoring of monitoring items included in Japanese water quality standard Sampling points were shown in Figure Analyzed Chemicals Target chemicals are selected, ... To minimize analytical variations between samples, samples were divided into professional analytical centers and the same group of substances was analyzed in the same laboratory for all the samples ... concentration of pesticides mainly depends upon their usage in the catchment area, timing of pesticide usage was also taken into consideration for sampling Analytical Methods In total, 12 analytical...
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Determination of EDTA in Water Samples by SPE-Gas Chromatography/Mass Spectrometry
... concentration of EDTA (443 μg/L) was observed in a Table - Table – Recovery of EDTA fromtap water samples and tap water Recovery of EDTA from Milli-Q water and Milli-Q water Recovery of triplicate samples ... an EDTA analytical method to the Japanese Standard Methods for the Examination of Water Occurrence of EDTA in river water samples from three regions of Japan was examined EDTA was detected in ... shown in Fig 2, EDTA was detected in ten of thirteen river water samples Although EDTA was not detected from river water samples of Kagami, Yoshino, and Kamo rivers (concentration: < 0.1 μg/L), EDTA...
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DETERMINATION OF ORGANIC COMPOUNDS IN DRINKING WATER BY LIQUID-SOLID EXTRACTION AND CAPILLARY COLUMN GAS CHROMATOGRAPHY/MASS SPECTROMETRY pdf
... METHOD 525.2 DETERMINATION OF ORGANIC COMPOUNDS IN DRINKING WATER BY LIQUID-SOLID EXTRACTION AND CAPILLARY COLUMN GAS CHROMATOGRAPHY/MASS SPECTROMETRY 1.0 SCOPE AND APPLICATION 1.1 This ... procedures for determination of organic compounds in finished drinking water, source water, or drinking water in any treatment stage The method is applicable to a wide range of organic compounds that ... portion of the sample into the solvent reservoir The water sample will drain into the cartridge, and from the exit into the suction flask Maintain the packing material in the cartridge immersed in water...
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A review on sample preparation and chromatographic determination of acephate and methamidophos in different samples
... that was done on Applesauce, Figure Study of acephate and methamidophos in food Grains (PDPAS) during 2008 and 2006 A review on sample preparation and chromatographic determination was developed ... of quantification were lg/L and lg/L, respectively (Araoud et al., 2010) 4.2 Determination of acephate and methamidophos in human and animal urine Acephate concentrations in the human urine were ... Urinary concentration of acephate was non-detectable after 48 h of the exposure (Maroni et al., 1990) Detection of acephate and methamidophos Based on physicochemical properties of acephate and...
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DETERMINATION OF VOLATILE ORGANIC COMPOUNDS (VOC) IN CONSUMER PRODUCTS AND REACTIVE ORGANIC COMPOUNDS IN AEROSOL COATING PRODUCTS doc
... 310 DETERMINATION OF VOLATILE ORGANIC COMPOUNDS (VOC) IN CONSUMER PRODUCTS AND REACTIVE ORGANIC COMPOUNDS IN AEROSOL COATING PRODUCTS APPLICABILITY 1.1 This method (Method 310) applies to the determination ... determination of the percent by weight of: (1) volatile organic compounds (VOC) in consumer products, antiperspirant and deodorant products, and aerosol coatings products as those terms are defined ... reactive organic compounds contained in aerosol coating products, for the purpose of determining compliance with the Aerosol Coatings Regulation 5.1 The testing begins when the Executive Officer...
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Báo cáo khoa học: "Effects of endocrine disrupting chemicals on expression of phospholipid hydroperoxide glutathione peroxidase mRNA in rat testes" pdf
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Surface functionalized magnetic nanoparticles for separation of chiral biomolecules, pharmaceuticals and endocrine disrupting compounds
... of magnetic separation, reviews previous work on magnetic separation and introduces the recent progress in separation of chiral biomolecules, pharmaceuticals, endocrine disrupting compounds and ... SURFACE FUNCTIONALIZED MAGNETIC NANOPARTICLES FOR SEPARATION OF CHIRAL BIOMOLECULES, PHARMACEUTICALS AND ENDOCRINE DISRUPTING COMPOUNDS SUDIPA GHOSH B.Sc (Chemical ... results of pharmaceuticals and endocrine disrupting compounds are presented Effect of operating conditions, kinetics of sorption separation and desorption conditions of pharmaceuticals and endocrine...
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Investigation and application of liquid chromatography mass spectrometry in the analysis of polar, less volatile and thermal unstable organic pollutants in environmental and biological samples 6
... study the degradation behavior in ultrapure water, drinking water, rain water, river water and seawater under various pH and irradiation sources (sunlight, darkness, indoor incandescent lighting and ... propham (66 %), which probably underwent thermal degradation under the extraction conditions The results indicate that although carbamates tested in this study are thermally labile, there was ... SFE Liquid chromatography- atmospheric pressure ionization- ion trap mass spectrometry was used to investigate the chemical degradation behavior of N-methylcarbamate in environmental water samples...
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Investigation and application of liquid chromatography mass spectrometry in the analysis of polar, less volatile and thermal unstable organic pollutants in environmental and biological samples 5
... freedom for the assignment of the variables under consideration The assignment of the main variables (A, B, C and D), two-variable interaction, and the level setting values of the main variables ... optimization of the MAE conditions To apply these techniques in practical applications, in this chapter I 138 demonstrated the application of these techniques in analysis of the residues of Nmethylcarbamate ... the average recovery (AR) results that the combination of A1 and B2 would result in a maximum response Since effects of duration time and volume of the solvents (factors C and D) are minor, less...
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Investigation and application of liquid chromatography mass spectrometry in the analysis of polar, less volatile and thermal unstable organic pollutants in environmental and biological samples 4
... 88 An interesting result observed from Fig 4- 6 is that in the same solvent, the recovery increases in going from PAHs to PCBs, and then to triazines (i.e, increasing polarity of analyte) The recovery ... 88.1±3.7 89.8±3.2 91 .4 3.0 93.5 4. 5 41 .0±3.8 18 .4 4. 0 10 80.0±3.6 84. 2 4. 5 89.2±5.0 90.2 4. 0 93.2±2.9 94. 6±3.7 36.8±2.8 15.2±2 .4 15 79 .4 5.0 84. 6±3.6 86.6±3.6 87.9 4. 7 94. 5 4. 5 96.2 4. 2 30.6±3.8 12.1±3.0 ... Hexane-acetone (1 :4) 47 .5 4. 2 48 .6 4. 3 48 .3 4. 0 46 .4 4. 5 49 .2 4. 4 Hexane-acetone (1:1) 36.2±3.0 35.9±2.9 41 .0±3.8 37.2±3.1 40 .1 4. 2 Dichloromethane 24. 2±2.9 23.6±3.0 26.0±2.8 24. 9 4. 6 26.6±5.5 a Soil-1,...
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Investigation and application of liquid chromatography mass spectrometry in the analysis of polar, less volatile and thermal unstable organic pollutants in environmental and biological samples 3
... 160.9 31 8.2 250.6 53. 3 3. 07 2.1 1. 43 60 52 45 * at pH 10.5, units of k and t1/2 are s-1 and s, respectively a incandescent lighting 64 3. 3 .3 Degradation of Propoxur in Natural Water In order to provide ... light intensity affects the K and t½ in each natural water sample K increases and t½ decreases accordingly when the light intensity increases in the order of darkness, indoor lighting and sunlight ... application of LC-APCI-MS for the determination of carbamates: carbofuran and 3hydroxy-carbofuran, and the analysis of triazine herbicides in water [8] LC-ESI-MS has...
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Investigation and application of liquid chromatography mass spectrometry in the analysis of polar, less volatile and thermal unstable organic pollutants in environmental and biological samples 2
... levels of the target analysts in soil samples before spiking 2. 3 .2. 2 Freshly spiked soils Freshly spiked soil samples were prepared by adding an appropriate volume of spiking solutions into the ... possible traces of PAHs, PCBs, triazines, carbamates and other organic contaminants, 100 g of each of the soil sample was immersed in 20 0 ml 46 each of methanol, acetone, dichloromethane and n-hexane ... purchased in a local market In order to remove possible trace organic contaminants prior to preparation, all of them were washed in fresh running water and then rinsed with deionized water The fish samples...
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Từ khóa: chromatographic determination of carbamate pesticides in environmental samplesselected methods for determination of metals in environmental samplesidentification by hplcms of new detected compounds in sugar beet root exudates for soil p mobilizationidentification by hplcms of new detected compounds in sugar beet root exudates for soil p mobilization reza khorasanieisolation of viral particles from large water environmental samples using tangential flow filtrationchromatographic analysis of insecticides chlorinated compounds in water and soilin vivo and in vitro determination of cell death markers in neuronslist of words that end in one vowel and one consonant with stress on the second syllabledetermination of largest mean qrs vector qrs axis using ecg leads i iiichromatography mass spectrometry ht gc ms to the detection of pesticides in riceliquid liquid extraction lle and gas chromatography screening for thms in chlorine disinfected drinking water using static headspace hs gas chromatographyapplications in the analysis of environmental samplessample handling of pesticides in food and environmental samplesdetermination of heavy metals in soil pdftitrimetric method for the determination of active chlorine in hypochlorite solutionsBáo cáo thực tập tại nhà thuốc tại Thành phố Hồ Chí Minh năm 2018Báo cáo quy trình mua hàng CT CP Công Nghệ NPVNghiên cứu tổ hợp chất chỉ điểm sinh học vWF, VCAM 1, MCP 1, d dimer trong chẩn đoán và tiên lượng nhồi máu não cấpNghiên cứu vật liệu biến hóa (metamaterials) hấp thụ sóng điện tử ở vùng tần số THzGiáo án Sinh học 11 bài 13: Thực hành phát hiện diệp lục và carôtenôitGiáo án Sinh học 11 bài 13: Thực hành phát hiện diệp lục và carôtenôitPhối hợp giữa phòng văn hóa và thông tin với phòng giáo dục và đào tạo trong việc tuyên truyền, giáo dục, vận động xây dựng nông thôn mới huyện thanh thủy, tỉnh phú thọTrả hồ sơ điều tra bổ sung đối với các tội xâm phạm sở hữu có tính chất chiếm đoạt theo pháp luật Tố tụng hình sự Việt Nam từ thực tiễn thành phố Hồ Chí Minh (Luận văn thạc sĩ)Phát triển du lịch bền vững trên cơ sở bảo vệ môi trường tự nhiên vịnh hạ longNghiên cứu tổng hợp các oxit hỗn hợp kích thƣớc nanomet ce 0 75 zr0 25o2 , ce 0 5 zr0 5o2 và khảo sát hoạt tính quang xúc tác của chúngTìm hiểu công cụ đánh giá hệ thống đảm bảo an toàn hệ thống thông tinThơ nôm tứ tuyệt trào phúng hồ xuân hươngSở hữu ruộng đất và kinh tế nông nghiệp châu ôn (lạng sơn) nửa đầu thế kỷ XIXGiáo án Sinh học 11 bài 15: Tiêu hóa ở động vậtNguyên tắc phân hóa trách nhiệm hình sự đối với người dưới 18 tuổi phạm tội trong pháp luật hình sự Việt Nam (Luận văn thạc sĩ)Giáo án Sinh học 11 bài 14: Thực hành phát hiện hô hấp ở thực vậtGiáo án Sinh học 11 bài 14: Thực hành phát hiện hô hấp ở thực vậtTrách nhiệm của người sử dụng lao động đối với lao động nữ theo pháp luật lao động Việt Nam từ thực tiễn các khu công nghiệp tại thành phố Hồ Chí Minh (Luận văn thạc sĩ)BÀI HOÀN CHỈNH TỔNG QUAN VỀ MẠNG XÃ HỘITÁI CHẾ NHỰA VÀ QUẢN LÝ CHẤT THẢI Ở HOA KỲ