Microplastics Distribution in Sediments Collected from Myanmar
In this study, 68 sediment samples of drainage channels, lakes, rivers and beaches from Myanmar were collected between 2014 and 2018, and analyzed to investigate the status of MPs concentration and prevalence. The high concentrations of MPs in sediments were found in urban cities called Yangon (13,855 pieces/kg dry weight), Mandalay (11,946 pieces/kg), and Pathein (12,583 pieces/kg), which were two orders of magnitude greater than the MPs concentrations in sediments collected in rural towns called Wundwin. These results suggested that the difference in high population densities and high municipal solid waste generation rat...
Source: Archives of Environmental Contamination and Toxicology - November 8, 2023 Category: Environmental Health Authors: Thant Zin Tun Ei Ei Mon Haruhiko Nakata Source Type: research

Food Web Structures and Mercury Exposure Pathway to Fish in Minamata Bay
Arch Environ Contam Toxicol. 2023 Nov 2. doi: 10.1007/s00244-023-01040-y. Online ahead of print.ABSTRACTWe analyzed total mercury content (THg) and carbon (δ13C) and nitrogen (δ15N) stable isotope ratios in fish, subtidal macrobenthos, and particulate organic matter (POM) as a proxy for pelagic phytoplankton and attached microalgae as a proxy for microphytobenthos to investigate the mercury exposure pathway in fish. For four seasons, samples of the above-mentioned organisms were collected on five occasions (July and October 2018 and January, April, and July 2019) in Minamata Bay. Isotope analysis showed that Minamata Bay...
Source: Archives of Environmental Contamination and Toxicology - November 3, 2023 Category: Environmental Health Authors: Kenji Yoshino Katsumasa Yamada Gen Kanaya Tomohiro Komorita Kai Okamoto Masaatsu Tanaka Yuya Tada Yasuhisa Henmi Megumi Yamamoto Source Type: research

Food Web Structures and Mercury Exposure Pathway to Fish in Minamata Bay
Arch Environ Contam Toxicol. 2023 Nov 2. doi: 10.1007/s00244-023-01040-y. Online ahead of print.ABSTRACTWe analyzed total mercury content (THg) and carbon (δ13C) and nitrogen (δ15N) stable isotope ratios in fish, subtidal macrobenthos, and particulate organic matter (POM) as a proxy for pelagic phytoplankton and attached microalgae as a proxy for microphytobenthos to investigate the mercury exposure pathway in fish. For four seasons, samples of the above-mentioned organisms were collected on five occasions (July and October 2018 and January, April, and July 2019) in Minamata Bay. Isotope analysis showed that Minamata Bay...
Source: Archives of Environmental Contamination and Toxicology - November 3, 2023 Category: Environmental Health Authors: Kenji Yoshino Katsumasa Yamada Gen Kanaya Tomohiro Komorita Kai Okamoto Masaatsu Tanaka Yuya Tada Yasuhisa Henmi Megumi Yamamoto Source Type: research

Food Web Structures and Mercury Exposure Pathway to Fish in Minamata Bay
Arch Environ Contam Toxicol. 2023 Nov 2. doi: 10.1007/s00244-023-01040-y. Online ahead of print.ABSTRACTWe analyzed total mercury content (THg) and carbon (δ13C) and nitrogen (δ15N) stable isotope ratios in fish, subtidal macrobenthos, and particulate organic matter (POM) as a proxy for pelagic phytoplankton and attached microalgae as a proxy for microphytobenthos to investigate the mercury exposure pathway in fish. For four seasons, samples of the above-mentioned organisms were collected on five occasions (July and October 2018 and January, April, and July 2019) in Minamata Bay. Isotope analysis showed that Minamata Bay...
Source: Archives of Environmental Contamination and Toxicology - November 3, 2023 Category: Environmental Health Authors: Kenji Yoshino Katsumasa Yamada Gen Kanaya Tomohiro Komorita Kai Okamoto Masaatsu Tanaka Yuya Tada Yasuhisa Henmi Megumi Yamamoto Source Type: research

Food Web Structures and Mercury Exposure Pathway to Fish in Minamata Bay
Arch Environ Contam Toxicol. 2023 Nov 2. doi: 10.1007/s00244-023-01040-y. Online ahead of print.ABSTRACTWe analyzed total mercury content (THg) and carbon (δ13C) and nitrogen (δ15N) stable isotope ratios in fish, subtidal macrobenthos, and particulate organic matter (POM) as a proxy for pelagic phytoplankton and attached microalgae as a proxy for microphytobenthos to investigate the mercury exposure pathway in fish. For four seasons, samples of the above-mentioned organisms were collected on five occasions (July and October 2018 and January, April, and July 2019) in Minamata Bay. Isotope analysis showed that Minamata Bay...
Source: Archives of Environmental Contamination and Toxicology - November 3, 2023 Category: Environmental Health Authors: Kenji Yoshino Katsumasa Yamada Gen Kanaya Tomohiro Komorita Kai Okamoto Masaatsu Tanaka Yuya Tada Yasuhisa Henmi Megumi Yamamoto Source Type: research

Dietary Uptake of Highly Hydrophobic Chemicals by Rainbow Trout (Oncorhynchus Mykiss)
Arch Environ Contam Toxicol. 2023 Nov 1. doi: 10.1007/s00244-023-01038-6. Online ahead of print.ABSTRACTRainbow trout (Oncorhynchus mykiss) was exposed through the diet to a mixture of non-ionic organic chemicals for 28 d, followed by a depuration phase, in accordance with OECD method 305. The mixture included hexachlorobenzene (HCB), 2,2',5,5'-tetrachlorobiphenyl (PCB-52), 2,2',5,5'-hexachlorobiphenyl (PCB-153), decachlorobiphenyl (PCB-209), decabromodiphenyl ether (BDE209), decabromodiphenyl ethane (DBDPE), bis-(2-ethylhexyl)-3,4,5,6-tetrabromophthalate (TBPH), perchloro-p-terphenyl (p-TCP), perchloro-m-terphenyl (m-TCP)...
Source: Archives of Environmental Contamination and Toxicology - November 1, 2023 Category: Environmental Health Authors: Lawrence P Burkhard Tylor J Lahren Kaila B Hanson Alex J Kasparek David R Mount Source Type: research

Current Status of Antifouling Biocides Contamination in the Seto Inland Sea, Japan
Arch Environ Contam Toxicol. 2023 Nov 1. doi: 10.1007/s00244-023-01036-8. Online ahead of print.ABSTRACTA monitoring survey of antifouling biocides was conducted in the Harima Nada Sea and Osaka Bay of the Seto Inland Sea, Japan to assess contamination by organotin (OT) compounds and alternative biocides. The concentrations of tributyltin (TBT) compounds in surface water ranged from 1.0 to 2.8 ng/L, and the detected TBT concentrations in the bottom water layer were higher than those in the surface water. The concentrations of TBT compounds in sediment samples ranged from 2.0 to 28 ng/g dry weight (dw), respectively. The co...
Source: Archives of Environmental Contamination and Toxicology - November 1, 2023 Category: Environmental Health Authors: Hiroya Harino Madoka Ohji Kumiko Kono Toshimitsu Onduka Takashi Hano Kazuhiko Mochida Source Type: research

Seasonal Disparities of Human Health Risk and Particle-Bound Metal Characteristics Associated with Atmospheric Particles in a Fishery Harbor
Arch Environ Contam Toxicol. 2023 Nov 1. doi: 10.1007/s00244-023-01037-7. Online ahead of print.ABSTRACTThe effects of atmospheric pollution from ship emissions have been considered for several harbors worldwide. The health risk assessment and source apportionment of particle-bound metals in a fishery harbor were investigated in this study. The most abundant metal elements in particulate matter (PM) on all sampling days in three seasons were Fe (280.94 ± 136.93 ng/m3), Al (116.40 ± 71.25 ng/m3), and Zn (110.55 ± 26.70 ng/m3). The ratios of V/Ni were 1.44 ± 0.31, 1.48 ± 0.09 and 1.87 ± 0.06 in PM10, PM2.5, and PM1, re...
Source: Archives of Environmental Contamination and Toxicology - November 1, 2023 Category: Environmental Health Authors: Cheng-Yun Tsai Yen-Ping Peng Chia-Hua Lin Ku-Fan Chen Chia-Hsiang Lai Pin-Hao Qiu Source Type: research

Dietary Uptake of Highly Hydrophobic Chemicals by Rainbow Trout (Oncorhynchus Mykiss)
Arch Environ Contam Toxicol. 2023 Nov 1. doi: 10.1007/s00244-023-01038-6. Online ahead of print.ABSTRACTRainbow trout (Oncorhynchus mykiss) was exposed through the diet to a mixture of non-ionic organic chemicals for 28 d, followed by a depuration phase, in accordance with OECD method 305. The mixture included hexachlorobenzene (HCB), 2,2',5,5'-tetrachlorobiphenyl (PCB-52), 2,2',5,5'-hexachlorobiphenyl (PCB-153), decachlorobiphenyl (PCB-209), decabromodiphenyl ether (BDE209), decabromodiphenyl ethane (DBDPE), bis-(2-ethylhexyl)-3,4,5,6-tetrabromophthalate (TBPH), perchloro-p-terphenyl (p-TCP), perchloro-m-terphenyl (m-TCP)...
Source: Archives of Environmental Contamination and Toxicology - November 1, 2023 Category: Environmental Health Authors: Lawrence P Burkhard Tylor J Lahren Kaila B Hanson Alex J Kasparek David R Mount Source Type: research

Current Status of Antifouling Biocides Contamination in the Seto Inland Sea, Japan
Arch Environ Contam Toxicol. 2023 Nov 1. doi: 10.1007/s00244-023-01036-8. Online ahead of print.ABSTRACTA monitoring survey of antifouling biocides was conducted in the Harima Nada Sea and Osaka Bay of the Seto Inland Sea, Japan to assess contamination by organotin (OT) compounds and alternative biocides. The concentrations of tributyltin (TBT) compounds in surface water ranged from 1.0 to 2.8 ng/L, and the detected TBT concentrations in the bottom water layer were higher than those in the surface water. The concentrations of TBT compounds in sediment samples ranged from 2.0 to 28 ng/g dry weight (dw), respectively. The co...
Source: Archives of Environmental Contamination and Toxicology - November 1, 2023 Category: Environmental Health Authors: Hiroya Harino Madoka Ohji Kumiko Kono Toshimitsu Onduka Takashi Hano Kazuhiko Mochida Source Type: research

Seasonal Disparities of Human Health Risk and Particle-Bound Metal Characteristics Associated with Atmospheric Particles in a Fishery Harbor
Arch Environ Contam Toxicol. 2023 Nov 1. doi: 10.1007/s00244-023-01037-7. Online ahead of print.ABSTRACTThe effects of atmospheric pollution from ship emissions have been considered for several harbors worldwide. The health risk assessment and source apportionment of particle-bound metals in a fishery harbor were investigated in this study. The most abundant metal elements in particulate matter (PM) on all sampling days in three seasons were Fe (280.94 ± 136.93 ng/m3), Al (116.40 ± 71.25 ng/m3), and Zn (110.55 ± 26.70 ng/m3). The ratios of V/Ni were 1.44 ± 0.31, 1.48 ± 0.09 and 1.87 ± 0.06 in PM10, PM2.5, and PM1, re...
Source: Archives of Environmental Contamination and Toxicology - November 1, 2023 Category: Environmental Health Authors: Cheng-Yun Tsai Yen-Ping Peng Chia-Hua Lin Ku-Fan Chen Chia-Hsiang Lai Pin-Hao Qiu Source Type: research

Assessing the Influence of Organic Carbon, Aging Time and Temperature on Bioaccessibility of Bifenthrin
Arch Environ Contam Toxicol. 2023 Oct 28. doi: 10.1007/s00244-023-01039-5. Online ahead of print.ABSTRACTTenax extraction, a measure of chemical desorption rates from sediments, was used to evaluate the bioaccessibility of bifenthrin in two different sediments exposed to three temperatures aged over a 56-d holding period. A 24-h single-point Tenax extraction was used and parent 14C-bifenthrin and polar metabolites were quantified in the sediment and Tenax. Bioaccessibility of bifenthrin was inversely related to the organic carbon (OC) content in the sediment, holding time, and temperature. Sequestration of the bifenthrin i...
Source: Archives of Environmental Contamination and Toxicology - October 29, 2023 Category: Environmental Health Authors: Mia Arkles Federico Sinche Michael J Lydy Source Type: research

Statistical Post-Processing Method for Evaluating Bioaccumulation in Fish Due to Dietary Exposure in Japan
Arch Environ Contam Toxicol. 2023 Oct 29. doi: 10.1007/s00244-023-01035-9. Online ahead of print.ABSTRACTIn 2018, the dietary exposure bioaccumulation fish test of the Organization for Economic Co-operation and Development Test Guideline No. 305 was introduced into Japan's Chemical Substances Control Law. The Japanese government has adopted a single definitive testing criterion for the absence of high bioaccumulation: the growth-corrected kinetic dietary magnification factor (BMFKg) must be less than 0.007. The aim of this study was to decrease regulatory restrictions in order to increase newly developed chemical substance...
Source: Archives of Environmental Contamination and Toxicology - October 29, 2023 Category: Environmental Health Authors: Yoshiyuki Inoue Yuka Koga Ryoko Takeshige Hidekazu Murakami Takumi Takamura Source Type: research

Assessing the Influence of Organic Carbon, Aging Time and Temperature on Bioaccessibility of Bifenthrin
Arch Environ Contam Toxicol. 2023 Oct 28. doi: 10.1007/s00244-023-01039-5. Online ahead of print.ABSTRACTTenax extraction, a measure of chemical desorption rates from sediments, was used to evaluate the bioaccessibility of bifenthrin in two different sediments exposed to three temperatures aged over a 56-d holding period. A 24-h single-point Tenax extraction was used and parent 14C-bifenthrin and polar metabolites were quantified in the sediment and Tenax. Bioaccessibility of bifenthrin was inversely related to the organic carbon (OC) content in the sediment, holding time, and temperature. Sequestration of the bifenthrin i...
Source: Archives of Environmental Contamination and Toxicology - October 29, 2023 Category: Environmental Health Authors: Mia Arkles Federico Sinche Michael J Lydy Source Type: research

Statistical Post-Processing Method for Evaluating Bioaccumulation in Fish Due to Dietary Exposure in Japan
Arch Environ Contam Toxicol. 2023 Oct 29. doi: 10.1007/s00244-023-01035-9. Online ahead of print.ABSTRACTIn 2018, the dietary exposure bioaccumulation fish test of the Organization for Economic Co-operation and Development Test Guideline No. 305 was introduced into Japan's Chemical Substances Control Law. The Japanese government has adopted a single definitive testing criterion for the absence of high bioaccumulation: the growth-corrected kinetic dietary magnification factor (BMFKg) must be less than 0.007. The aim of this study was to decrease regulatory restrictions in order to increase newly developed chemical substance...
Source: Archives of Environmental Contamination and Toxicology - October 29, 2023 Category: Environmental Health Authors: Yoshiyuki Inoue Yuka Koga Ryoko Takeshige Hidekazu Murakami Takumi Takamura Source Type: research