Article
Spectroscopy
Monireh Shahvalinia, Arash Larki, Kamal Ghanemi
Summary: In this study, a simple and cost-effective method based on UA-DLLME and smartphone colorimetric measurement was introduced for the separation and determination of TCS in contaminated waters. By optimizing various experimental parameters and considering their effects, this method can accurately measure TCS in a wide concentration range and provides satisfactory results in multiple water and wastewater samples.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2022)
Article
Chemistry, Analytical
Valfredo Azevedo Lemos, Jeferson Alves Barreto, Luana Bastos Santos, Rosivan dos Santos de Assis, Cleber Galvao Novaes, Ricardo J. Cassella
Summary: Dispersive liquid-liquid microextraction (DLLME) is widely used for the separation and preconcentration of various chemical species, with some systems using a syringe as an extraction environment. This review discusses methods utilizing this approach, critical aspects like dispersion promotion, analytical characteristics, and the pros and cons of the methods, as well as future trends in in-syringe microextraction systems.
Article
Chemistry, Analytical
Rui Zhang, Xiaofang Yang, Daichun He, Ya Liu, Yunlong Zhu, Zhengui Li, Yong Liu, Qingwen Deng, Shengchun Yang, Xiaodong Wen
Summary: A new method for detecting lead and copper using a natural deep eutectic solvent (NADES) modified magnetic TiO2 composite was established. The method combines magnetic dispersive micro solid phase extraction (MDMSPE) and inductively coupled plasma optical emission spectrometry (ICP OES) to obtain reliable results in natural medicine.
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2022)
Article
Chemistry, Multidisciplinary
Serkan Topal, Miray Oner, Buse Tugba Zaman, Cansu Demir, Fatma Turak, oemer Tahir Gunkara, Sezgin Bakirdere
Summary: An easy and rapid derivatization and preconcentration method called vortex assisted dispersive liquid-liquid microextraction (VA-DLLME) was proposed for the determination of selenium in lake water samples. The gas chromatography-mass spectrometry (GC-MS) system was utilized to determine inorganic selenium through a developed derivatization procedure. The VA-DLLME method enhanced the detection capability of the GC-MS system through preconcentration of the analyte. Under optimized conditions, the VA-DLLME-Se-PDA-FVD-GC-MS method showed a LOD of 2.2 ng mL(-1) and a LOQ of 7.3 ng mL(-1). Spiking experiments with lake water confirmed the accuracy and applicability of the method with a percent recovery range of 80-106%.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Food Science & Technology
Mojtaba Shamsipur, Naser Mafakheri, Nasrin Babajani
Summary: A new ultrasound-vortex-assisted dispersive liquid-liquid microextraction (US-VA-DLLME) technique was designed for the pre-concentration and extraction of ultra-trace amounts of cadmium ions, and successfully applied to the separation and determination of cadmium in water and food samples.
FOOD ANALYTICAL METHODS
(2022)
Article
Biochemistry & Molecular Biology
Qian Sun, Xinyu Cui, Yanfeng Wang, Pingping Zhang, Wenjuan Lu
Summary: Ligands play a crucial role in the determination of cadmium in rice samples using flame atomic absorption spectrometry (FAAS). In this study, a comparative evaluation of 10 commercially available ligands for the formation of Cd(II)-ligand complex and determination of cadmium in rice samples was conducted using ultrasound-assisted dispersive liquid-liquid microextraction (UADLLME) combined with FAAS. Sodium diethyldithiocarbamate (DDTC) was identified as the most suitable ligand, and 1-heptanol and ethanol were chosen as the extraction and disperser solvent, respectively. Under the optimized experimental conditions, the method exhibited a low detection limit and good recovery rates for Cd(II) in different rice samples. The proposed method offers simplicity, cost-effectiveness, and accuracy for the analysis of Cd(II) in rice.
Article
Chemistry, Multidisciplinary
Adil Elik, Nail Altunay
Summary: This study presents an optimized magnetic ionic-based dispersive liquid-liquid microextraction (MIL-DLLME) method for the analysis and extraction of cadmium in water and food samples. The method exhibits good reliability and allows for accurate determination of cadmium content in water and food samples. Compared to conventional methods, this approach offers a fast, environmentally friendly, and simple way to determine cadmium with minimal solvent consumption and higher extraction capability.
SUSTAINABLE CHEMISTRY AND PHARMACY
(2022)
Article
Biochemical Research Methods
Mohamed A. Abdelaziz, Fotouh R. Mansour, Neil D. Danielson
Summary: A hydrophobic gadolinium-based magnetic ionic liquid was studied as an extraction solvent in DLLME for the first time, showing higher extraction efficiency than iron or manganese analogues, leading to improved sensitivity and reproducibility of the method, along with a reduced analysis time.
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Applied
Nail Altunay
Summary: A magnetic ionic liquid UA-DLLME technique was successfully applied for the preconcentration and extraction of 5-HMF in honey samples, with optimized microextraction factors using a multivariate optimization strategy, providing important reference data for further research.
JOURNAL OF FOOD COMPOSITION AND ANALYSIS
(2022)
Article
Chemistry, Analytical
Reyla A. S. Dias, Eliane R. Sousa, Gilmar S. Silva, Lanna K. Silva, Arlan S. Freitas, Diana L. D. Lima, Erika M. L. Sousa
Summary: This study developed an HPLC-FLD methodology for the separation of fluoroquinolones and optimized the DLLME process for clean-up and preconcentration of enrofloxacin in water samples. The method showed successful results in samples with low salinity content.
MICROCHEMICAL JOURNAL
(2021)
Article
Chemistry, Analytical
Vanessa de Jesus Ferreira, Jorge S. Almeida, Valfredo A. Lemos, Olivia M. C. de Oliveira, Karina S. Garcia, Leonardo S. G. Teixeira
Summary: A method combining RP-VALLME and EDXRF was developed for the determination of Cu, Mn, Ni, and Pb in diesel oil samples, showing low detection limits, good precision, and high recovery rates. This method proved to be efficient and comparable to ICP-OES for the analysis of the four analytes.
Article
Chemistry, Applied
Bunyamin Dogan, Nail Altunay
Summary: A simple and green hydrophobic magnetic ionic-liquid assisted dispersive liquid-liquid microextraction (MIL-DLLME) was optimized for the determination of trace cadmium (Cd (II)) in environmental and food samples. The MIL-DLLME method showed selective and sensitive extraction of Cd (II), and its extraction parameters were investigated and optimized. The analytical characteristics of the method were evaluated, and the validation of the MIL-DLLME was performed using reference materials and real samples.
FOOD ADDITIVES AND CONTAMINANTS PART A-CHEMISTRY ANALYSIS CONTROL EXPOSURE & RISK ASSESSMENT
(2023)
Article
Food Science & Technology
Nail Altunay, Baki Hazer, Muhammad Farooque Lanjwani, Mustafa Tuzen
Summary: A new VA-dSP mu E method was developed in this study to determine cadmium in food and water samples by using synthesized PvbXa as an adsorbent. The optimized method showed good reliability and had the advantages of low cost, simplicity, sensitivity, and high efficiency.
Article
Chemistry, Applied
Malek Hassan, Furkan Uzcan, Usama Alshana, Mustafa Soylak
Summary: A novel method combining switchable-hydrophilicity liquid-liquid microextraction and magnetic nanoparticle-based dispersive solid-phase microextraction was proposed for the determination of erythrosine using UV/Vis spectrophotometry. The method showed excellent analytical performance with high sensitivity, low detection limits, and good reproducibility, making it suitable for the extraction and determination of erythrosine in food and consumer products.
Article
Chemistry, Analytical
Anahid Rezaeefar, Mahboob Nemati, Mir Ali Farajzadeh, Mohammad Reza Afshar Mogaddam, Farzaneh Lotfipour
Summary: The study developed a combined method of dispersive micro solid-phase extraction and dispersive liquid-liquid microextraction for the simultaneous extraction of five mycotoxins in soymilk samples. The method showed low limits of detection and quantification, with acceptable repeatability in analyzing different samples from the market. The proposed approach successfully detected aflatoxin B1 in all tested samples and ochratoxin A in one sample.
MICROCHEMICAL JOURNAL
(2022)
Review
Environmental Sciences
Waqar Ali, Hua Zhang, Muhammad Junaid, Kang Mao, Nan Xu, Chuanyu Chang, Atta Rasool, Muhammad Aslam, Jamshed Ali, Zhugen Yang
Summary: This review discusses the sources, uptake, and toxicity of arsenic and selenium in the environment, focusing on their interactions in plants, animals, and humans. The interaction between arsenic and selenium is crucial for understanding the transport and toxicological effects of these metals in biological systems.
CRITICAL REVIEWS IN ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2021)
Article
Environmental Sciences
Muhammad Waris, Jameel Ahmed Baig, Tasneem Gul Kazi, Hassan Imran Afridi, Farah Maqsood
Summary: The research presents a new Microwave induced single-step extraction (MSE) method to analyze the chemical fractionation of cadmium (Cd), chromium (Cr), and lead (Pb) in saline soil samples of Hyderabad, Pakistan. The MSE method showed satisfactory results in terms of experimental efficiency and accuracy when compared with the BCR-CSE method.
ENVIRONMENTAL EARTH SCIENCES
(2021)
Article
Chemistry, Applied
Jamshed Ali, Mustafa Tuzen, Xinbin Feng, Tasneem G. Kazi
Summary: A green vortex assisted liquid-liquid microextraction method was developed for preconcentration and detection of selenium, with evaluation of extraction parameters through multivariate techniques. The data indicated that concentrations of selenium in all types of water samples were below the permissible limit recommended by WHO.
Article
Environmental Sciences
M. Waris, J. A. Baig, F. N. Talpur, H. I. Afridi, T. G. Kazi, H. Yousaf
Summary: This study demonstrates the phytoextraction of trace metals by selected plants in saline soil, with T. aphylla showing promise for copper and zinc extraction, A. maurorum for copper, and S. Persica for zinc. The findings suggest that these plants may have potential for phytoremediation of cobalt, copper, and zinc from saline soil.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2022)
Article
Biochemistry & Molecular Biology
Ghulam Qadir Chanihoon, Hassan Imran Afridi, Farah Naz Talpur, Tasneen Gul Kazi, Jameel Ahmed Baig
Summary: This research examined the relationship between carcinogenic element cadmium (Cd) and anti-carcinogenic element zinc (Zn) in the scalp hair and blood samples of female breast cancer patients, finding that Cd levels were significantly higher in breast cancer patients compared to healthy subjects, while Zn levels showed the opposite trend.
BIOLOGICAL TRACE ELEMENT RESEARCH
(2022)
Article
Environmental Sciences
Atif G. Kazi, Hassan Afridi, Mohammed B. Arain, Tasneem G. Kazi
Summary: The study found that patients with scalp psoriasis and Pityriasis amiantacea had significantly lower concentrations of selenium and zinc compared to the reference group, possibly due to occupational exposure. Office workers had relatively higher levels of selenium and zinc, while reference workers had lower levels possibly due to poor diet.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Chemistry, Analytical
Ayaz Ali Lashari, Tasneem Gul Kazi, Jameel Ahmed Baig, Hassan Imran Afridi
Summary: A simple and novel ultrasonically modified dual-cloud point extraction method was developed to preconcentrate toxic heavy metal lead in aquifer water samples in Thar coalfield, Pakistan. The method showed high sensitivity and accuracy and revealed that the lead content in the water samples exceeded the recommended values by the World Health Organisation.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Applied
Fazeela Kandhro, Tasneem Gul Kazi, Hassan Imran Afridi, Jameel Ahmed Baig
Summary: This study compared the levels of electrolytes and essential trace elements in milk samples from different cattle species and humans, finding variations in the content of these elements among different animal species, with human milk having the lowest concentrations except for selenium. Additionally, there were differences in the percentage of elements in whey compared to total milk samples across different species.
JOURNAL OF FOOD COMPOSITION AND ANALYSIS
(2022)
Article
Chemistry, Analytical
Ghulam Fareed, Jameel Ahmed Baig, Tasneem Gul Kazi, Hassan Imran Afridi, Khalil Akhtar, Imam Bakhsh Solangi
Summary: The aim of this study was to assess the levels of heavy metals in sugar industry products and effluents, and estimate the intake and toxic risks of these metals for different age groups of sugar industry workers’ families. The results showed that the intake of lead and cadmium was lower than the provisional acceptable intake levels recommended by WHO.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY
(2022)
Article
Environmental Sciences
A. Lashari, T. G. Kazi, H. I. Afridi, J. A. Baig, M. B. Arain, A. A. Lashari, F. Kandhro
Summary: The global use of petroleum hydrocarbons has led to an increase in the release of contaminants in the environment, affecting soil, groundwater, and vegetation. This study evaluated the dispersion of vanadium (V) in soil, vegetables, fruits, and animal feed samples cultivated in agricultural fields using waste soil/mud from oil well drilling. The results showed that the test samples had significantly higher levels of V compared to the control samples. The study also assessed the risk of V intake through consuming groundwater, vegetables, and fruits obtained from exposed agricultural land.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2023)
Article
Environmental Sciences
Fazeela Kandhro, Tasneem Gul Kazi, Hassan Imran Afridi, Jameel Ahmed Baig, Ayaz Ali Lashari, Anjum Lashari
Summary: This study determined the levels of toxic elements (arsenic, cadmium, and lead) in whey milk samples from different cattle and human subjects in Sindh, Pakistan, based on their consumption of drinking water or surface water. The whey milk samples were treated with a deep eutectic solvent and the digestion efficiency was tested under various parameters. The levels of toxic elements were also measured in whole milk samples. The results showed that milk samples from cattle and humans who consumed contaminated groundwater had significantly higher levels of toxic elements compared to those who consumed fresh canal water.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Anjum Lashari, Hasan Imran Afridi, Tasneem Gul Kazi, Farah Naz Talpur, Jameel Ahmed Baig
Summary: The study aimed to evaluate the concentrations of manganese, zinc, and chromium in blood, scalp hair, and serum samples of T1DM children, showing significantly low levels of these elements in the samples of diabetic children compared to referent subjects.
JOURNAL OF THE CHEMICAL SOCIETY OF PAKISTAN
(2021)
Article
Chemistry, Multidisciplinary
Asma Akhtar, Tasneem Gul Kazi, Hassan Imran Afridi, Jameel Ahmed Baig, Syed Ghulam Musharraf, Mohammad Balal Arain
Summary: A dual-step ultrasonically modified cloud point extraction method was developed for enrichment of mercury in various tobacco products, with dry snuff containing about four times higher Hg content than moist snuff. The method involved complexing Hg with diethyldithiophosphate, entrapping in surfactant, and analysis by atomic absorption spectrometry. Analysis of biological samples showed twice the Hg concentration in snuff consumers compared to referents.
Article
Chemistry, Multidisciplinary
Fazal Elahi, Muhammad Balal Arain, Wajid Ali Khan, Nasrullah Shah, Tasneem Gul Kazi
Summary: An ultrasound-assisted deep eutectic solvent liquid-liquid microextraction (UA-DES-LLME) technique was developed for selective speciation, extraction, and preconcentration of chromium species, with successful application in the determination of Cr(VI) and Cr(III) in tea and water samples.