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Non-suppressed ion chromatography-tandem electrospray mass spectrometry using a short column for simultaneous analysis of dichloroacetic acid, trichloroacetic acid, and bromate: aqueous ammonia as the eluent additive.
Anal Methods
January 2025
State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing 210023, China.
Dichloroacetic acid (DCAA), trichloroacetic acid (TCAA), and bromate (BrO) are disinfection byproducts (DBPs) formed during drinking water treatment and pose health risks. Rapid and reliable detection of these DBPs is essential for ensuring water safety. Non-suppressed ion chromatography (IC)-electrospray ionization mass spectrometry (IC-ESI-MS/MS) offers a promising approach for simultaneous analysis of organic haloacetic acids (HAAs) and inorganic oxyhalides, but previous methods using toxic methylamine can pose health risks.
View Article and Find Full Text PDFHealth risk assessment of potassium bromate in bread in Ghana.
Heliyon
January 2024
Food Laboratory Department, Food and Drugs Authority, Post Office Box CT2783, Cantonments, Accra, Ghana.
Introduction: Potassium bromate (KBrO) is an oxidizing agent added to flour to improve bread quality. However, KBrO is nephrotoxic, and a class B carcinogen banned in most countries, including Ghana.
Aim: This study aimed to determine the residual KBrO concentration in bread and to estimate the chemical and carcinogenic risk that is associated with the consumption of these breads in Ghana.
Ecotoxicity of bromate and human health risks resulting from wastewater treatment units' effluents associated with some key physicochemical parameters in two hotspots connected to the Egyptian Mediterranean Sea.
Mar Environ Res
November 2024
Department of Marine Ecology, Faculty of Aquaculture and Marine Fisheries, Arish University, Egypt.
This study is the first of its kind in terms of focusing on the seasonal monitoring of bromine species (bromide and bromate) and some of the main physicochemical parameters in the surface water of stations inside and in front of the El Noubareya and El-Umum drains that flow directly or indirectly to the Egyptian Mediterranean coast at A (El Noubareya Drain) and B (El-Mex Bay) sites. Among the bromine species, bromate (BrO) is a disinfection byproduct considered by many international agencies to have a potential carcinogenic effect in humans and is also known to be ecologically toxic to aquatic organisms. Drain water samples collected from the studied sites A and B had a bromide/chlorinity ratio (3.
View Article and Find Full Text PDFIncreased formation of brominated disinfection by-products and toxicities during low-HO-mediated ozonation of reclaimed water.
Sci Total Environ
December 2024
Shenzhen Key Laboratory of Ecological Remediation and Carbon Sequestration, Key Laboratory of Microorganism Application and Risk Control, Ministry of Ecology and Environment, Institute of Environment and Ecology, Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, PR China; Key Laboratory of Microorganism Application and Risk Control of Shenzhen, Guangdong Provincial Engineering Research Center for Urban Water Recycling and Environmental Safety, Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, PR China. Electronic address:
Article Synopsis
- Reusing reclaimed water involves the risk of generating harmful disinfection by-products (DBPs), which require careful management to ensure safety.
- A study found that treating water with low HO/O ratios led to higher toxicity due to increased levels of bromate and adsorbable organic bromine (AOBr), which were not a concern at higher HO/O ratios.
- The research suggests that maintaining a higher HO/O ratio can reduce the formation of harmful substances and associated toxicity, indicating the importance of treatment method adjustments to mitigate risks in reclaimed water usage.
Bromate-induced oxidation of carbamazepine and toxicity assessment of transformation products in the freezing-sunlight process: Effects of trivalent chromium.
Environ Res
December 2024
Key Laboratory of Groundwater Resources and Environment, Ministry of Education, Jilin Provincial Key Laboratory of Water Resources and Environment, College of New Energy and Environment, Jilin University, Changchun 130012, China. Electronic address:
Article Synopsis
- Bromate (BrO) can oxidize pharmaceuticals and personal care products (PPCPs) more effectively in freezing conditions, but the role of certain metals, like Cr(III), in this process is often ignored.
- When Cr(III) is present, it significantly reduces the effectiveness of BrO in breaking down the PPCP carbamazepine (CBZ) in ice, with degradation rates dropping by up to 60.3%.
- Instead of degrading CBZ, Cr(III) reacts with oxidants to produce Cr(VI), which alters the degradation dynamics in the presence of sunlight, leading to a complex interplay of factors affecting PPCP toxicity in frozen environments.*
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