Article
Chemistry, Analytical
Lanlan Li, Qirui Huang, Jing Xiao, Jiamin Feng, Shu Zhang, Hong Luo, Zhirong Zou, Xiaoli Xiong
Summary: In this study, Fe3O4 served as both an adsorbent and photocatalyst in the photochemical vapor generation-atomic fluorescence spectrometry (PVG-AFS) determination of Bi(III) after preconcentration. The effects of formic and acetic acid concentration, UV irradiation time, Fe3O4 concentration, and interferences from co-existing ions were investigated. Results showed that the AFS intensity was slightly enhanced by the mixed acid solution, but a significant enhancement was observed when Fe3O4 was used as a photocatalyst. Fe3O4 can decompose in the mixed acid solution, generating Fe3+ which acts as a sensitizer for improving Bi(III) efficiency. Under optimized conditions, the LOD of the proposed PVG-AFS system with or without preconcentration (5 mL sample) were 0.44 ng/mL and 0.07 ng/mL, respectively. The PVG-AFS system was successfully applied to the determination of water samples and demonstrated good accuracy and applicability with recoveries ranging from 94% to 104%.
MICROCHEMICAL JOURNAL
(2022)
Article
Chemistry, Analytical
Siyu Gu, Xudong Huang, Mingli Chen, Jixin Liu, Xuefei Mao, Xing Na, Guoying Chen, Yunbin Shao
Summary: A novel IDBD reactor coupled with ETV was established for arsenic determination, investigating the evolution mechanisms of arsenic species using XPS. DBDA atomizes arsenic nanoparticles while DBDT traps and releases arsenic oxides, enhancing sensitivity and precision in seafood sample analysis. The method shows potential for rapid arsenic analysis based on direct solid sampling ETV instrumentation.
ANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Analytical
Yaru Zhang, Xuefei Mao, Di Tian, Jixin Liu, Chunsheng Li
Summary: A novel method using low-cost miniaturized hydride generation optical emission spectrometry equipment coupled with an in situ dielectric barrier discharge trap was developed for the determination of As in edible seaweed samples. The method significantly improved the linear range and sensitivity, with a detection limit of 0.2 μg L-1. Application of the method to seaweed samples yielded a method detection limit of 0.25 mg kg(-1) with good accuracy and precision.
ANALYTICAL METHODS
(2021)
Article
Chemistry, Analytical
Yuheng Lu, Wen Zeng, Jing Hu, Xiandeng Hou
Summary: In this study, Zr-based metal organic frameworks (UiO-66) were used for selective extraction of trace bismuth from water samples and digests of iron alloy. After simple centrifugation separation, the Bi(III)-adsorbed UiO-66 was analyzed by atomic fluorescence spectrometry (HG-AFS) through direct slurry sampling and in-situ hydride generation. The method demonstrated high selectivity for bismuth and resistance to interference from transition metals, enabling reliable determination of trace bismuth in high-purity iron alloy, seawater, and river water samples.
MICROCHEMICAL JOURNAL
(2023)
Article
Pharmacology & Pharmacy
Xiao Wu, Ruoning Yan, Rong Guan, Yi Du, Yuexin Liu, Shanhu Wu, Song Zhu, Min Song, Taijun Hang
Summary: This study conducted an arsenic-related health risk assessment of a realgar-containing traditional Chinese medicine called NiuHuangJieDu tablets (NHJDT) in healthy volunteers. The results showed that NHJDT was relatively safe in a single therapeutic dose, but long-term medication may lead to the accumulation of arsenic in blood and its slow excretion rate, posing health risks. Therefore, careful monitoring of arsenic exposure is important during the use of realgar-containing TCMs.
FRONTIERS IN PHARMACOLOGY
(2022)
Article
Pharmacology & Pharmacy
Xiao Wu, Zeling Zhong, Kuangmin Lin, Xinhe Liu, Zhichao Wu, Zitian Liu, Yongming Li
Summary: This study compared the pharmacokinetics and urinary excretion of arsenic and mercury in rats after oral administration of realgar, cinnabar, and AGNHP. AGNHP reduced arsenic absorption and promoted urinary excretion, while increasing blood mercury absorption and reducing urinary excretion. No significant toxicity was observed in the clinical dose range.
FRONTIERS IN PHARMACOLOGY
(2022)
Review
Chemistry, Multidisciplinary
Bashdar Abuzed Sadee, Yaseen Galali, Salih M. S. Zebari
Summary: The speciation of arsenic is important due to its varying toxicity depending on its chemical form. Long-term exposure to arsenic can have severe health effects. Various methods and techniques have been developed to identify arsenic species in vegetation samples, including extraction, separation, and detection techniques.
Article
Spectroscopy
Barbora Stadlerova, Jiri Dedina, Stanislav Musil
Summary: The performance of two types of radiation sources for atomic fluorescence spectrometry, namely the electrodeless discharge lamp (EDL) and the boosted discharge hollow cathode lamp (Superlamp), were studied and compared using bismuth as a model analyte at specific fluorescence lines. Hydride generation was utilized for analyte introduction and an in-house assembled non-dispersive atomic fluorescence spectrometer was adjusted accordingly. Optimization of the radiation sources considered duty cycle, applied currents, and proper focusing. The EDL exhibited higher sensitivity, radiation intensity, and lower detection limits compared to the Superlamp.
SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY
(2023)
Article
Spectroscopy
Joanna Dobrzynska, Marzena Dabrowska, Ryszard Dobrowolski, Kinga Morlo
Summary: Pt(IV) ion-imprinted thiocyanato-functionalized SBA-15 material (Pt(IV)S1) was used for preconcentration of Pt(IV) ions from digested geological samples before ETAAS determination. The ion-imprinted material showed high adsorption affinity and selectivity towards Pt(IV) ions. The proposed procedure achieved a high enrichment factor of 38 and a low limit of quantification of 0.079 mg kg-1.
SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY
(2023)
Article
Chemistry, Applied
Julieta R. Camurati, Agustin Londonio, Patricia Smichowski, Vanesa N. Salomone
Summary: The study utilized an on-line HPLC-UV-thermo-oxidation-HGAFS system to analyze arsenic speciation in dried seaweeds, showing that arsenosugars are the most abundant compounds in the investigated seaweeds. The method provided an accurate analysis approach for quantifying arsenic compounds.
Article
Chemistry, Applied
Joanna Dobrzynska, Rafal Olchowski, Emil Zieba, Ryszard Dobrowolski
Summary: A hybrid Zr/amine-modified mesoporous silica sorbent was proposed for preconcentration of inorganic As from drinking water before FI HG AAS determination. Different sorbents were synthesized and characterized, with SBA/TMPED/Zr-0.5 chosen for its effective adsorption capacity. The method showed good linearity, low detection limits, and high recovery rates for arsenic from water samples.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Chemistry, Analytical
Dilek Yildiz, Muhammet Atasoy, Ahmet Demirak
Summary: A method for determination of ultra-trace arsenic (III) using in-situ trapping and revolatilization techniques on a Pt-coated W-coil atom trap was reported. Multiple experimental conditions were optimized, and the accuracy of the method was validated using certified reference materials. Coating the surface of the W-coil trap with Pt ensures sensitivity for at least 350 atomization cycles.
ANALYTICAL LETTERS
(2022)
Article
Chemistry, Analytical
Yaru Zhang, Jixin Liu, Xuefei Mao, Xing Na, Di Tian, Yongzhong Qian
Summary: A novel field analysis method for analyzing lead in environmental water samples was developed using a portable optical emission spectrometric instrument coupled with solid acid hydride generation and in situ dielectric barrier discharge trap. The method eliminated moisture interference and transportation issues of liquid acid, achieving a low detection limit and high sensitivity.
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2022)
Article
Chemistry, Analytical
Hongxia Wang, Liuzhen Si, Chunsheng Li, Zhiheng Zhou, Di Tian
Summary: In this paper, a real-time suppression method named the non-fluorescent line ratios (NFLR) method was proposed to solve the scattering interference (SI) problem in arsenic detection. Based on the analysis of an ultraviolet digital micromirror device spectrometer (UV-DMD-AFS), the non-fluorescent lines of arsenic and the ratios of non-fluorescent lines to fluorescent lines were determined. The NFLR method effectively suppressed the SI of arsenic and achieved a higher long-term accuracy.
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2022)
Article
Chemistry, Analytical
Yuheng Lu, Chenghui Li, Yunfei Tian, Jing Hu, Xiandeng Hou
Summary: The highly sensitive detection of trace tellurium (Te(IV)) in real samples with complicated matrix was achieved by using a new method based on photochemical vapor generation-atomic fluorescence spectrometry (PVG-AFS) and Co-MOF-74 as an adsorbent and Co2+ ion sensitizer. The synthesized Co-MOF-74 showed excellent adsorption capability for Te(IV) within a short time. After conversion to volatile compounds under UV irradiation, the Te(IV) was detected by AFS. The proposed method exhibited a limit of detection of 0.08 ng/mL for Te(IV) after a 50-fold preconcentration and was successfully applied to the analysis of various natural water samples with satisfactory spike recoveries.
ANALYTICA CHIMICA ACTA
(2023)
