journal
MENU ▼
Read by QxMD icon Read
search

Critical Reviews in Analytical Chemistry

journal
https://www.readbyqxmd.com/read/28892402/metformin-a-review-of-characteristics-properties-analytical-methods-and-impact-in-the-green-chemistry
#1
Mariana Teixeira da Trindade, Ana Carolina Kogawa, Hérida Regina Nunes Salgado
Diabetes mellitus is considered a public health problem. The initial treatment consists of improving the lifestyle and making changes in the diet. When these changes are not enough, the use of medication becomes necessary. The metformin aims to reduce the hepatic production of glucose and is the preferred treatment for type 2. The objective is to survey the characteristics and properties of metformin, as well as hold a discussion on the existing analytical methods to green chemistry and their impacts for both the operator and the environment...
September 11, 2017: Critical Reviews in Analytical Chemistry
https://www.readbyqxmd.com/read/28857621/analytical-approaches-for-determining-chemical-oxygen-demand-in-water-bodies-a-review
#2
Ji Li, Guobing Luo, LingJun He, Jing Xu, Jinze Lyu
Chemical oxygen demand (COD) is a critical analytical parameter for water quality assessment. COD represents the degree of organic pollution in water bodies. However, the standard analytical methods for COD are time-consuming and possess low oxidation efficiency, chloride interference, and severe secondary pollution. Works performed during the last two decades have resulted in several technologies, including modified standard methods (e.g., microwave-assisted method) and new technologies or methods (e.g., electro- and photo-oxidative methods based on advanced oxidation processes) that are less time-consuming, environment friendly, and more reliable...
August 31, 2017: Critical Reviews in Analytical Chemistry
https://www.readbyqxmd.com/read/28777019/multiple-versus-single-set-validation-of-multivariate-models-to-avoid-mistakes
#3
Peter de Boves Harrington
Validation of multivariate models is of current importance for a wide range of chemical applications. Although important, it is neglected. The common practice is to use a single external validation set for evaluation. This approach is deficient and may mislead investigators with results that are specific to the single validation set of data. In addition, no statistics are available regarding the precision of a derived figure of merit (FOM). A statistical approach using bootstrapped Latin partitions is advocated...
August 4, 2017: Critical Reviews in Analytical Chemistry
https://www.readbyqxmd.com/read/28777018/current-progress-of-nanomaterials-in-molecularly-imprinted-electrochemical-sensing
#4
Chunju Zhong, Bin Yang, Xinxin Jiang, Jianping Li
Nanomaterials have received much attention during the past decade because of their excellent optical, electronic, and catalytic properties. Nanomaterials possess high chemical reactivity, also high surface energy. Thus provide a stable immobilization platform for biomolecules while preserving their reactivity. Due to the conductive and catalytic properties, Nanomaterials can also enhance the sensitivity of molecularly imprinted electrochemical sensors by amplifying the electrode surface, increasing the electron transfer, and catalyzing the electrochemical reactions...
August 4, 2017: Critical Reviews in Analytical Chemistry
https://www.readbyqxmd.com/read/28722465/overview-on-the-surface-functionalization-mechanism-and-determination-of-surface-functional-groups-of-plasma-treated-carbon-nanotubes
#5
Cafer Saka
The use of carbon materials for many applications is due to the unique diversity of structures and properties ranging from chemical bonds between the carbon atoms of the materials to nanostructures, crystallite alignment, and microstructures. Carbon nanotubes and other nanoscale carbonaceous materials draw much attention due to their physical and chemical properties, such as high strength, high resistance to corrosion, electrical and thermal conductivity, stability and a qualified adsorbent. Carbon-based nanomaterials, which have a relatively large specific area and layered structure, can be used as an adsorbent for efficient removal of organic and inorganic contaminants...
July 19, 2017: Critical Reviews in Analytical Chemistry
https://www.readbyqxmd.com/read/28665683/multi-phase-equilibrium-and-solubilities-of-aromatic-compounds-and-inorganic-compounds-in-sub-and-supercritical-water-a-review
#6
Qinli Liu, Ding Xin, Bowen Du, Tao Fang
Supercritical water oxidation (SCWO), as a novel and efficient technology, has been applied to wastewater treatment processes. The use of phase equilibrium data to optimize process parameters can offer a theoretical guidance for designing SCWO processes and reducing the equipment and operating costs. In this work, high pressure phase equilibrium data for aromatic compounds+water systems and inorganic compounds+water systems are given. Moreover, thermodynamic models, equations of state (EOS) and empirical and semi-empirical approaches are summarized and evaluated...
June 30, 2017: Critical Reviews in Analytical Chemistry
https://www.readbyqxmd.com/read/28644042/a-review-on-recent-applications-of-high-performance-liquid-chromatography-in-metal-determination-and-speciation-analysis
#7
Heena Rekhi, Susheela Rani, Neha Sharma, Ashok Kumar Malik
High-performance liquid chromatography (HPLC) has several advantages over the conventional methods due to their operational simplicity. It is a vital tool to determine metal ions having same mass but different electronic configuration, to separate complex mixtures and to resolve ions that may be indistinguishable by mass spectrometry alone. Metal ions play vital role in many biological processes and involved in setting up of many diseases. Therefore, the development of simple methods for the detection and quantification of metals in real samples might serve as diagnostic tools for various diseases...
June 23, 2017: Critical Reviews in Analytical Chemistry
https://www.readbyqxmd.com/read/28644038/critical-review-on-the-analytical-techniques-for-the-determination-of-the-oldest-statin-atorvastatin-in-bulk-pharmaceutical-formulations-and-biological-fluids
#8
K S Kokilambigai, R Seetharaman, K S Lakshmi
Statins are a group of medicines that can help to lower the level of low-density-lipoprotein(LDL) cholesterol "bad cholesterol" in the blood. Having a high level of LDL cholesterol is potentially dangerous, as it can lead to a hardening and narrowing of arteries (atherosclerosis) and cardiovascular disease (CVD), Atorvastatin is one of the oldest member of the statin family and is used in the treatment of dyslipidemia and the prevention of cardiovascular disease. Atorvastatin was first made in August 1985 and from 1996 to 2012 under the trade name Lipitor, atorvastatin became the world's best selling drug...
June 23, 2017: Critical Reviews in Analytical Chemistry
https://www.readbyqxmd.com/read/28631936/the-recent-developments-in-sample-preparation-for-mass-spectrometry-based-metabolomics
#9
Zhi-Gang Gong, Jing Hu, Xi Wu, Yong-Jiang Xu
Metabolomics is a critical member in systems biology. Although great progress has been achieved in metabolomics, there are still some problems in sample preparation, data processing and data interpretation. In this review, we intend to explore the roles, challenges and trends in sample preparation for mass spectrometry- (MS-) based metabolomics. The newly emerged sample preparation methods were also critically examined, including laser microdissection, in vivo sampling, dried blood spot, microwave, ultrasound and enzyme-assisted extraction, as well as microextraction techniques...
July 4, 2017: Critical Reviews in Analytical Chemistry
https://www.readbyqxmd.com/read/28304192/direct-analysis-of-samples-of-various-origin-and-composition-using-specific-types-of-mass-spectrometry
#10
REVIEW
Hubert Byliński, Jacek Gębicki, Tomasz Dymerski, Jacek Namieśnik
One of the major sources of error that occur during chemical analysis utilizing the more conventional and established analytical techniques is the possibility of losing part of the analytes during the sample preparation stage. Unfortunately, this sample preparation stage is required to improve analytical sensitivity and precision. Direct techniques have helped to shorten or even bypass the sample preparation stage; and in this review, we comment of some of the new direct techniques that are mass-spectrometry based...
July 4, 2017: Critical Reviews in Analytical Chemistry
https://www.readbyqxmd.com/read/28287269/a-critical-review-of-analytical-methods-for-quantification-of-cefotaxime
#11
REVIEW
Lívia Paganini Consortti, Hérida Regina Nunes Salgado
Bacterial resistance to antibiotics is a growing phenomenon in the world. Considering the relevance of antimicrobials for population and the reduction in the registration of new antimicrobials by regulatory, proper quality control is required in order to minimize the spread of bacterial resistance and ensure the effectiveness of a treatment, as well as safety for the patient. Among the antimicrobials is cefotaxime, a drug belonging to third-generation cephalosporins, which is highly active against Gram-negative bactéria and is used to treat central nervous system infections such as meningitis and septicemia...
July 4, 2017: Critical Reviews in Analytical Chemistry
https://www.readbyqxmd.com/read/28266865/ionic-liquids-in-hplc-and-ce-a-hope-for-future
#12
REVIEW
Imran Ali, Mohd Suhail, Mohd Marsin Sanagi, Hassan Y Aboul-Enein
The ionic liquids (ILs) are salts with melting points below 100°C. These are called as ionic fluids, ionic melts, liquid electrolytes, fused salts, liquid salts, ionic glasses, designer solvents, green solvents and solvents of the future. These have a wide range of applications, including medical, pharmaceutical and chemical sciences. Nowadays, their use is increasing greatly in separation science, especially in chromatography and capillary electrophoresis due to their remarkable properties. The present article describes the importance of ILs in high-performance liquid chromatography and capillary electrophoresis...
July 4, 2017: Critical Reviews in Analytical Chemistry
https://www.readbyqxmd.com/read/28128965/a-review-of-extraction-and-analytical-methods-for-the-determination-of-tartrazine-e-102-in-foodstuffs
#13
REVIEW
Kobun Rovina, Shafiquzzaman Siddiquee, Sharifudin Md Shaarani
Tartrazine is an azo food dye, which is orange-colored and water soluble. It is usually used in foods, pharmaceuticals, cosmetics, and textiles. Tartrazine has the potential to cause an adverse health effect on humans, such as hyperactivity in children, allergy, and asthma. Joint FAO/WHO Expert Committee on Food Additive and EU Scientific Committee for Food have standardized the acceptable daily intake for tartrazine that is 7.5 mg kg(-1) body weight. Many researchers have detected the presence of tartrazine for monitoring the quality and safety of food products...
July 4, 2017: Critical Reviews in Analytical Chemistry
https://www.readbyqxmd.com/read/28080136/isoniazid-a-review-of-characteristics-properties-and-analytical-methods
#14
REVIEW
Guilherme Felipe Dos Santos Fernandes, Hérida Regina Nunes Salgado, Jean Leandro Dos Santos
Isoniazid is a synthetic antimicrobial and one of the most important first-line drugs used in the treatment of tuberculosis. Since it was introduced in the therapy in 1952, the drug remains at the front line of the antituberculosis treatment mainly due to its potency and high selectivity against Mycobacterium tuberculosis. Pharmaceutical analysis and therapeutic drug monitoring of isoniazid in both, pharmaceuticals and biological samples, plays an important role to comprehend aspects regarding to bioavailability, bioequivalence and therapeutic monitoring during patients following-up...
July 4, 2017: Critical Reviews in Analytical Chemistry
https://www.readbyqxmd.com/read/28005392/analytical-methodologies-for-the-assessment-of-phthalate-exposure-in-humans
#15
REVIEW
Emmanouil D Tsochatzis, R Tzimou-Tsitouridou, Helen G Gika
Screening and quantification of phthalate metabolites in biological matrices provide information on the phthalate exposure. The preferred tool for the determination of phthalate metabolites is liquid chromatography-mass spectrometry, typically preceded by a sample extraction step. Method development for the determination of phthalate metabolites by hyphenated techniques faces challenges due to the widespread occurrence of phthalates in the laboratory and sample collection materials that impairs their accurate quantification...
July 4, 2017: Critical Reviews in Analytical Chemistry
https://www.readbyqxmd.com/read/28574278/problems-of-determining-the-content-of-cr-vi-in-raw-materials-and-materials-containing-chromite-ore
#16
Katarzyna Stec
Materials made with chromite ore are widely applied in the industry metallurgy as well as in the foundry industry. The oxidation number of chromium in these materials is both (III) and (VI). Currently there are no procedures allowing proper determination of chrome in chromite ores and ore-containing materials. The analytical methods applied, which are dedicated to a very narrow range of materials, e.g. cement, and cannot be applied in the case of materials which, apart from trace amounts of Cr(VI), contain mainly compounds of Cr(III), Fe(III) as well as trace compounds of Cu(II), Ni(II) and V(V)...
June 2, 2017: Critical Reviews in Analytical Chemistry
https://www.readbyqxmd.com/read/28548867/statins-determination-a-review-of-electrochemical-techniques
#17
I Antal, M Koneracka, V Zavisova, M Kubovcikova, Zh Kormosh, P Kopcansky
The use of electroanalytical techniques for the determination of statins (Atorvastatin, Fluvastatin, Lovastatin, Pitavastatin, Pravastatin, Rosuvastatin and Simvastatin) is reviewed covering the period from 1997 to 2016. Among all of the published electrochemical methods, voltammetry and polarography are the most popular techniques for determination of statins and both are used for the analysis of pharmaceutical dosage forms and biological samples. Determination of statins by potentiometric method using ion-selective electrodes is reported in only few papers...
May 26, 2017: Critical Reviews in Analytical Chemistry
https://www.readbyqxmd.com/read/28541719/the-studies-of-archaeological-pottery-with-the-use-of-selected-analytical-techniques
#18
Joanna Kałużna-Czaplińska, Angelina Rosiak, Jacek Grams, Karolina Chałupka, Przemysław Makarowicz, Waldemar Maniukiewicz, Elżbieta Szubiakiewicz
Modern analytical methods play an important role in archaeological objects, including ceramics. This review focuses on the use of analytical methods such as: gas chromatography coupled mass spectrometry (GC/MS), Fourier transform infrared spectroscopy (FTIR), Time-of-flight secondary ion mass spectrometry (ToF-SIMS), Powder X-ray diffraction (XRD) with thermal analysis (TGA-MS) to study the chemical and mineralogical composition of archaeological samples and organic residues preserved inside. In this paper, special attention was paid to the ToF-SIMS method, which allows the determination of characteristic ions on the surface of ceramic samples...
May 25, 2017: Critical Reviews in Analytical Chemistry
https://www.readbyqxmd.com/read/28541711/a-critical-review-on-ultrasensitive-spectroscopic-based-methods-for-high-throughput-monitoring-of-bacteria-during-infection-treatment
#19
Nicoleta Elena Dina, Alia Colniță, Tiberiu Szöke-Nagy, Alin Sebastian Porav
The world is in the midst of a pre-emptive public health emergency, one that is just as dramatic as the global aggressive viruses-related crises (Ebola, Zika, or SARS), but not as visible. The "superbugs" and their antimicrobial resistance (AMR) don't cause much public alarm or awareness, but provoke financial losses of $100 trillion annually [1] . This status quo review offers an overview of ultrasensitive methods for high-throughput monitoring of bacteria during infection treatment, the effects of antibiotics on bacteria at single-cell level and the challenges we will need to face in their detection due to the extraordinary capability of these "superbugs" to gain and constantly improve multiresistance to antibiotics...
May 25, 2017: Critical Reviews in Analytical Chemistry
https://www.readbyqxmd.com/read/28080135/characteristics-properties-and-analytical-methods-of-amoxicillin-a-review-with-green-approach
#20
REVIEW
Bianca Aparecida de Marco, Jéssica Sayuri Hisano Natori, Stefany Fanelli, Eliane Gandolpho Tótoli, Hérida Regina Nunes Salgado
Bacterial infections are the second leading cause of global mortality. Considering this fact, it is extremely important studying the antimicrobial agents. Amoxicillin is an antimicrobial agent that belongs to the class of penicillins; it has bactericidal activity and is widely used in the Brazilian health system. In literature, some analytical methods are found for the identification and quantification of this penicillin, which are essential for its quality control, which ensures maintaining the product characteristics, therapeutic efficacy and patient's safety...
May 4, 2017: Critical Reviews in Analytical Chemistry
journal
journal
48994
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"