Analytical chemistry
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The Department of Organic Chemistry, the Department of Inorganic and Applied Chemistry, and the Department of Chemistry are among the six departments, six majors, and three research laboratories that make up the Faculty of Chemistry today, some 70 years after its founding. Physical chemistry, analytical chemistry, polymer chemistry, medicinal chemistry, and three key-research labs, including the labs for natural compounds, cancer, and computational chemistry.
6p dianmotminh02 03-05-2024 5 1 Download
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Cuốn giáo trình "Tiếng Anh trong kỹ thuật hóa học" được biên soạn nhằm bổ sung cho sinh viên các từ vựng, tổ hợp từ, thuật ngữ, cấu trúc ngữ pháp hay gặp trong những tài liệu khoa học kỹ thuật, giúp sinh viên làm quen với việc dịch Anh-Việt và ngược lại, viết một văn bản khoa học bằng tiếng Anh. Sách được chia thành 2 phần, mời các bạn cùng tham khảo phần 1 cuốn sách.
90p oursky04 05-09-2023 17 6 Download
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The target of this project is to construct a general and feasible procedure to determine the acidic equilibrium constants in aqueous solution at 25oC from the data of the potentiometric titration process in a rapid, simple and effective way. Then it will be applied to estimate the equilibrium constants of some new acids.
27p tunelove 10-06-2021 12 4 Download
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Research objectives of the thesis: The thesis was conducted to research and develop a new type of electrode: glass charcoal electrodes modified by flower platinum nano (PtNFs/GC) and to evaluate the properties of fabricated electrodes: electrode structure, morphology, physical and chemical properties.
28p extraenglish 24-05-2021 29 3 Download
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The objects of the thesis: Study and develop the simultaneous analysis method of plant growth stimulants in vegetables using by high-performance liquid chromatography coupled with ion-trapping mass spectrometry. Apply the studied method of analysis and assessment of the current use, residue level and the potential accumulation of plant growth stimulants used in vegetable production in several districts belonged to Hanoi.
28p extraenglish 24-05-2021 12 2 Download
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The thesis focused on the synthesis of Mn, Ce, C doped ZnO nanoparticles materials and doped ZnO with multi-layered carbon nanotube nanocomposite materials and assessed their photo-oxidative potentiality through photocatalytic reactions of methylene blue (MB) decomposition in aqueous solution under visible light.
30p capheviahe27 23-02-2021 19 4 Download
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Develop a rapid and simple method for analysis of multi-residue pesticides, including organophosphate, organochlorine, carbamate, and pyrethroid compounds in soil, with sample preparation based on QuEChERS technique and determination by GC-MS.
26p capheviahe26 25-01-2021 28 3 Download
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Research to develop an analytical method for methyl mercury in biological samples with high sensitivity, selectivity, and accuracy; research and assessment of the transformation and bioaccumulation of mercury in sediment and biological samples in Than Sa gold mining area, Vo Nhai district, Thai Nguyen province.
27p capheviahe26 25-01-2021 23 4 Download
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Studying and orienting applicability to detecting, quantifying separately and simultaneously cadmium, lead in aqueous environment by means of stripping voltammetry method with the desire that the nanostructures of the electrodes help increase the sensitivity of the analytical method.
28p capheviahe26 25-01-2021 29 4 Download
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This study will be achieved by aiming to: Build the analytical procedure of determination of mercury species in sediment using selective extraction technique . Assess of the reliability of the method of determination of mercury speciation in sediment. Apply the result of study to determine forms of mercury in sediment at a certain area.
27p xacxuoc4321 09-07-2019 23 6 Download
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Bài giảng Hóa phân tích (Analytical chemistry) trình bày về các nội dung chính như: Nhập môn hóa phân tích, cân bằng hóa học, kỷ thuật phân tích thể tích (pp chuẩn độ), cân bằng acid – base và chuẩn độ, phản ứng tạo phức & chuẩn độ, phân tích trọng lượng & cân bằng tủa, phản ứng tạo tủa & chuẩn độ, pin điện hóa & thế điện cực, phản ứng Oxy hóa khử & chuẩn độ điện thế.
25p dieuhang 11-11-2016 175 19 Download
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Sắc ký lỏng cao áp (High-performance liquid chromatography), đôi khi gọi là High-pressure liquid chromatography_HPLC) là một kỹ thuật sắc ký sử dụng để phân tách một hỗn hợp trong lĩnh vực hóa phân tích (analytical chemistry) và sinh hóa (biochemistry) với mục đích xác định, định lượng và tinh khiết từng thành phân riêng lẻ của hợp chất. HPLC cũng được xem là một kỹ thuật đo đạc trong hóa phân tích, thay vì kỹ thuật trọng lượng (gravitimetric technique). HPLC có nhiều ứng dụng bao gồm y học ...
94p la_lan23 12-04-2013 411 127 Download
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Standards for standardization of reducing agents: K2Cr2O7 KIO3 Ce4+ Standards for standardization of oxidizing agents: Na2C2O4 Na2S2O3 Fe2+ (Mohr’s salt and Oesper’s salt) 4 .V. Auxiliary Oxidizing and Reducing Agents The analyte must be in a single oxidation state at the start of the titration. This can be achieved by using a preoxidation or pre-reduction step prior to analysis
25p doilan 26-01-2013 50 4 Download
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Oxidation/Reduction Reactions Reactions in which electrons are transferred from one reactant to another. Example I-1 Cu2+ + Zn (s) Cu (s) + Zn2+ Cu2+ has undergone reduction and is reduced. Oxidizing reagent: Cu2+. Reducing agent: Zn. Zn has undergone oxidation and is oxidized. .
91p doilan 26-01-2013 66 10 Download
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Coordinate covalent bonds: a bond formed when both electrons of the bond are donated by one atom. [H3N: Ag :NH3]+ Ag+ + 2(:NH3) Electron configuration of Ag [Kr]4d105s15P0 Ag+ [Kr]4d105s0 5P0 Sp hybrid orbitals: accommodate 2 pairs of electrons. Linear Complex ion: A metal ion with Lewis base attached to it through coordinate covalent bond. Complex (Coordinate compound): a compound consisting either of complex ions and other ions of opposite charge or of neutral complex species.
49p doilan 26-01-2013 65 6 Download
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Treating Complex Acid-Base Systems Complex systems are defined as solutions made up of: 1) Two acids or bases of different strengths HCl + CH3COOH NaOH + CH3COO2) An acid or base that has two or more acidic protons or basic functional groups H3PO4 Ca(OH)2 .3) An amphiprotic substance that is capable of acting as both acid and base HCO3- + H2O CO32- + H3O+ HCO3- + H2O H2CO3 + OHNH3+CH2COO- + H2O NH2CH2COO- + H3O+ NH3+CH2COO- + H2O NH3+CH2COOH + OH- .
46p doilan 26-01-2013 76 6 Download
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Solutions and Indicators for Neutralization Titrations A. Standard Solutions: The standards solutions used as titrants for unknown w eak acids or bases are alw ays strong bases or acids, respectively. Standard titrant acids: dilute solutions of HCl, HClO 4 , or H 2 SO 4 . Standard titrant bases: dilute solutions of NaOH, KOH. The primary standards may not be strong acids or bases (e.g., potassium acid phthalate, sodium oxalate, sodium bicarbonate).
43p doilan 26-01-2013 67 6 Download
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individual species Determining which species are present Reactions Equations Assumption Steps in Figure 9-1 .A Systematic Method .
39p doilan 26-01-2013 35 4 Download
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The concentrations and charge strength of "spectator“ or non-reacting electrolytes The tendency to form precipitates will be decreased with increasing ionic strength 1) interactions (but not necessarily reactions) of the reactant species with other charged species 2) interactions of the charged product species with the spectator ions. H2O + H2CO3 H3O+ + HCO3Ka1 increases with increasing ionic strength, so the solution becomes more acidic.
36p doilan 26-01-2013 44 5 Download
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Titrimetry refers to that group of analytical techniques which takes advantage of titers or concentrations of solutions. The word "titer" is also used to denote "equivalence" or that amount of a solution required to complete a chemical reaction. Titrimetry often refers to the use of some volume of a solution of known concentration to determine the quantity of an analyte. But there are some variations on the use of the term.
66p doilan 26-01-2013 63 5 Download