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Determination of Rare Earth Elements (REEs) in Airborne Particulate Matter (APM) Collected in Tokyo, Japan, and a Positive Anomaly of Europium and Terbium
-Rare Earth Elements Airborne Particulate Matter Tokyo
2010/9/17
The determination of rare earth elements (REEs) in airborne particulate matter (APM) was conducted, and the distribution pattern of atmospheric REEs was evaluated in this study. The APM was collected ...
Traceable Amino Acid Analyses of Proteins and Peptides by Isotope-Dilution Mass Spectrometry Using Precolumn Derivatization Reagent
Traceable Amino Acid Analyses Proteins and Peptides Isotope-Dilution Mass Spectrometry
2010/9/17
We have developed an accurate and traceable quantitation method of proteins and peptides by isotope-dilution mass spectrometry with the precolumn derivatization for hydrolyzed amino acid. This method ...
Multivariate Optimization and Validation of a Capillary
Multivariate Optimization Validation of a Capillary
2010/9/15
A fast, accurate, precise and sensitive capillary electrophoresis method for the simultaneous determination of dextromethorphan hydrobromide, phenylephrine hydrochloride, paracetamol and chlorpheniram...
Improved Solid-phase Spectrometry for the Microdetermination of Total and Dissolved Phosphate
Improved Solid-phase Spectrometry Microdetermination Phosphate
2010/9/17
Solid-phase spectrophotometry has been improved for the determination of the total and dissolved phosphate in water. The target phosphate-P at sub-μg dm−3 to μg dm−3 levels in a 20-cm3 wat...
Potential Utility of DNA Sequence Analysis of Long-term-stored Plant Leaf Fragments for Forensic Discrimination and Identification
Potential Utility DNA Sequence Analysis Long-term-stored Plant Leaf Fragments Forensic Discrimination Identification
2010/9/15
This study examined the potential utility of DNA sequence analysis to discriminate and identify plant material in forensic investigations. DNA was extracted from plant leaf fragments of 11 species sto...
Application of a Dynamic Reaction Cell (DRC) ICP-MS in Chromium and Iron Determinations in Rock, Soil and Terrestrial Water Samples
Application of a Dynamic Reaction Cell Chromium Iron Determinations Rock
2010/9/15
Despite environmental and geochemical interests, Cr and Fe have been left beyond the reach of determinations by ICP-MS due to severe interferences originating from Ar. The applicability of a dynamic r...
Rapid UHPLC Method for Simultaneous Determination of Vancomycin, Terbinafine, Spironolactone, Furosemide and Their Metabolites: Application to Human Plasma and Urine
Rapid UHPLC Method Simultaneous Determination Vancomycin
2010/9/14
The ultra high performance liquid chromatography (UHPLC)-UV method for the simultaneous determination of furosemide, saluamine (furosemide metabolite), spironolactone, carnenone (spironolactone active...
Enantiomeric Separation by Capillary Electrochromatography on a Sulfated Poly β-Cyclodextrin Modified Silica-based Monolith
Enantiomeric Separation Capillary Electrochromatography Sulfated Poly β-Cyclodextrin
2010/9/17
A sulfated poly β-cyclodextrin (SPCD) modified silica-based monolithic column was prepared for enantiomeric separation. First, 2-hydroxy-3-allyloxy-propyl-β-cyclodextrin (allyl-β-CD) was bonded onto a...
Simultaneous Voltammetric Determination of Enrofloxacin and Ciprofloxacin in Urine and Plasma Using Multiwall Carbon Nanotubes Modified Glassy Carbon Electrode by Least-Squares Support Vector Machines
Simultaneous Voltammetric Determination Enrofloxacin Ciprofloxacin
2010/9/14
A simple and sensitive method is proposed for the electrochemical determination of enrofloxacin (ENRO) and its primary metabolite ciprofloxacin (CIPRO) at a multiwall carbon nanotubes/glassy carbon el...
Determination of Linear Short Chain Aliphatic Aldehyde and Ketone Vapors in Air Using a Polystyrene-coated Quartz Crystal Nanobalance Sensor
Linear Short Chain Aliphatic Aldehyde and Ketone Vapors Polystyrene-coated Quartz Crystal Nanobalance Sensor
2010/9/17
A polystyrene coated quartz crystal nanobalance (QCN) sensor was developed for use in the determination of a number of linear short-chain aliphatic aldehyde and ketone vapors contained in air. The qua...
Determination of Tricyclic Antidepressants in Human Breast Milk by Capillary Electrophoresis
Determination Tricyclic Antidepressants Human Breast Milk Capillary Electrophoresis
2010/9/13
A method for the determination of several tricyclic antidepressants (imipramine, desipramine, amitriptyline, nortriptyline, clomipramine, norclomipramine, doxepine and nordoxepine) in breast milk has ...
偶氮胂Ⅱ用作检定铍的试剂
检定铍 偶氮胂Ⅱ
2008/12/11
偶氮胂Ⅱ与铍在弱酸性溶液中形成紫色络合物,此反应在PH～5.5时可用於铍的检定,其灵敏度较常用的桑色素法及锟茜素法为高。检出限为0.013微克胂,稀度限1:4,000,000。在检出铍的条件下,有多种离子干扰,如应用适当的隐蔽剂即可避免其影响。隐蔽前后的界限比均分别求出。应用该试剂可检出铜合金中的少量铍,而不需预先分离。
生物相容性BAB型两亲嵌段共聚物的合成及其自组装
嵌段共聚物 聚乙二醇 聚（Nε-苄氧羰基赖氨酸） 自组装 螺旋
2008/2/15
Lys(z)-NCA was synthesized in the presence of triphosgene,amphiphilic triblock copolymers poly(Nε-CBZ-Lysine)-PEG-poly(Nε-CBZ-Lysine) were synthesized in DMF using amino-end ended PEG as initiator wit...
水在C12-EOx-C12•2Br/正己醇/正庚烷W/O微乳中的状态
水/C12-EOx-C12水/C12-EOx-C12• 2Br/正己醇/正庚烷 W/O微乳 FT-IR 水状态
2007/12/23
摘要 以FT-IR方法研究了水/C12-EOx-C12•2Br/正己醇/正庚烷形成的W/O微乳中水的状态. 结果表明, 其中的水存在4种状态, 分别为阳离子头基结合水、反离子结合水、类似本体的水以及束缚在微乳栅栏层中的水. 由解卷积技术分解FT-IR谱图, 进而获得每个表面活性剂分子对应于这4种状态水分子的数目nN＋, nBr-, nb和nf. 随着水含量(W0)增加, nb急剧增大,...