Peroxidase-like reaction by a synergistic inorganic catalyst colloid: a new method for hydrogen peroxide detecting in air samples

Moradpour, Zahra; Kohnehshahri, Mehrdad Helmi; Shekarloo, Masoomeh Vahabi; Jalili, Vahid; Zendehdel, Rezvan

doi:10.1007/s00396-021-04887-6

Cited by 5 publications

(1 citation statement)

References 39 publications

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“…Sampling pumps were calibrated at approximately 500 mL/min before and after sampling with a digital calibrator. The H 2 O 2 concentration of the sample is determined by the UV–vis spectrophotometer (Agilent, USA) set at 410 nm (Moradpour et al 2021 ; OSHA 1978 ).…”

Section: Methodsmentioning

confidence: 99%

Health risk assessment of inhalation exposure to dry fogging of hydrogen peroxide in a dental clinic during the COVID-19 pandemic

Hesam

Shekarloo

Atamaleki

et al. 2022

Environ Sci Pollut Res

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After the outbreak of COVID-19, many dental clinics use dry fogging of hydrogen peroxide (H 2 O 2 ) to disinfect the air and surfaces. Inhalation of highly concentrated solutions of H 2 O 2 may cause severe respiratory problems. This study aimed to estimate the health risk assessments of inhalation exposure to dry fogging of H 2 O 2 in a dental clinic. This cross-sectional, descriptive-analytical study was performed to determine the inhalation exposure and health risk of 9 dental clinic staff with H 2 O 2 in six rooms. Occupational exposure to H 2 O 2 was assessed using the OSHA VI-6 method and a personal pump with the flow rate of 500 mL/min connected to the midget fritted-glass impinger containing 15 mL of TiOSO 4 collecting solution. The health effects of H 2 O 2 exposure were assessed using a respiratory symptoms questionnaire. The health risk assessment of inhaled exposure to H 2 O 2 was also performed using the method provided by the Singapore occupational health department. The mean respiratory exposure of clinic staff to H 2 O 2 was ranged from 1.3 to 2.83 ppm for six rooms which was above the limits recommended by international organizations. Dyspnea (44.4%), cough (33.3%), and nasal burning (22.2%) were the most prevalent health problems. The results also showed a medium risk for endodontics and surgery, and lower risk for periodontics, restorative care, orthodontics, and prosthetics. The results of this study indicate that when using an automated hydrogen peroxide–vapor fogger, calculating the spraying time based on room volume and using the rooms after 30 min of fogging is very important and can greatly reduce the risk ranking.

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Section: Methodsmentioning

confidence: 99%

Health risk assessment of inhalation exposure to dry fogging of hydrogen peroxide in a dental clinic during the COVID-19 pandemic

Hesam

Shekarloo

Atamaleki

et al. 2022

Environ Sci Pollut Res

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Multi-metal Nanozyme Properties for Colorimetric Peroxidase Reaction: Overview of an Applicable Method Validation for H2O2 Detection

Ravannakhjavani,

Dehghan,

Panahi

et al. 2023

J Inorg Organomet Polym

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Displacement of enzyme mimic nanomaterials has been developed due to disadvantages of natural enzymes. Peroxidases reaction could be used for H2O2 colorimetric evaluation in different media. We aim to develop a new method based on the best catalytic activity of metal Nanozyms. A method for H2O2 detection was carried out by TMB peroxidation of metal nanozymes. In this way peroxidase activity of Ag-nano zeolite Y, Cu-nano zeolite Y, Zn-nano zeolite Y and Ag,Cu,Zn -nano zeolite Y was evaluated by Central Composite Design. Total of 28.42 % from three metals was exchanged in multi metal nano zeolite Y (mMy) with higher peroxidase-like activity. Nanozyme Km and Vm were evaluated 0.076 and 8.76×10 8 , respectively which produced fast and sensitive catalytic reaction.H2O2 method detection carried out by LOD level of 0.12 ppm, and recovery parameters of 99%, in the linear range of 0.5-50 ppm.The mMy nanozyme was validated for H2O2 colorimetric detection. In conclusion an applicable way as a fast, sensitive, accurate and reproducible method has been suggested for occupational exposure monitoring.

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Preparation of the layered structure Ag@Co3O4 composites as peroxidase memetic for colorimetric detection of ascorbic acid

et al. 2023

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Peroxidase-like reaction by a synergistic inorganic catalyst colloid: a new method for hydrogen peroxide detecting in air samples

Cited by 5 publications

References 39 publications

Health risk assessment of inhalation exposure to dry fogging of hydrogen peroxide in a dental clinic during the COVID-19 pandemic

Health risk assessment of inhalation exposure to dry fogging of hydrogen peroxide in a dental clinic during the COVID-19 pandemic

Multi-metal Nanozyme Properties for Colorimetric Peroxidase Reaction: Overview of an Applicable Method Validation for H2O2 Detection

Preparation of the layered structure Ag@Co3O4 composites as peroxidase memetic for colorimetric detection of ascorbic acid

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