Neuropsychological effects of long-term occupational exposure to mercury among chloralkali workers

Hosseinabadi, Majid Bagheri; Khanjani, Narges; Mobarake, Mostafa Dehghani; Shirkhanloo, Hamid

doi:10.3233/wor-203194

Cited by 9 publications

(5 citation statements)

References 34 publications

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“…Various cross-sectional studies have shown associations between chronic low-level Pb exposure and mood problems, namely fatigue, anxiety and depressive symptoms in adult populations [11,66]. Similarly, chronic exposure to Hg have been linked to depressive symptomatology in numerous cohorts [67][68][69]. Moreover, Plusquellec et al [9] showed that Inuit preschoolers prenatally exposed to PCB-153 exhibited lower positive affect, according to examiner ratings of positive expressions (i.e., smiling, laughing).…”

Section: Discussionmentioning

confidence: 99%

Pre- and postnatal exposure to legacy environmental contaminants and sensation seeking in Inuit adolescents from Nunavik

Gagnon-Chauvin,

Jacobson,

Jacobson

et al. 2023

PLOS Glob Public Health

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Despite extensive evidence from cohort studies linking exposure to lead (Pb), mercury (Hg) and polychlorinated biphenyls (PCBs) to numerous cognitive outcomes in children and adolescents, very few studies addressed reward sensitivity, a key dimension of emotional regulation. The present study aimed to examine associations between pre- and postnatal exposure to these environmental neurotoxicants and sensation seeking, a behavioral feature of reward. A total of 207 Inuit adolescents (mean age = 18.5, SD = 1.2) from Nunavik, Canada, completed the Brief Sensation Seeking Scale (BSSS-4) and Sensation Seeking– 2 (SS-2), two self-report questionnaires assessing proneness to sensation seeking. Prenatal, childhood and adolescent exposure to Pb, Hg and PCBs were measured in cord blood at birth and blood samples at 11 years of age and at time of testing. Multiple linear regression models were performed, potential confounders including participants’ sociodemographic characteristics and nutrient fish intake were considered. Results showed that higher child blood levels of Pb (b = -0.18, p = 0.01) and PCB-153 (b = -0.16, p = 0.06) were associated with lower BSSS-4 total scores, while cord and adolescent blood PCB-153 levels were significantly related to lower SS2 total scores (b = -0.15, p = 0.04; b = -0.24, p = 0.004). Such associations persisted after further adjustment for co-exposure to concurrent contaminants. These associations were influenced by self-report positive affect and marginally moderated by sex. Sex differences were only observed for child PCB exposure, with the association for risk-taking sensation seeking observed only in girls but not in boys. Further research is warranted to assess the extent to which reduced sensation seeking in chronically exposed individuals affects their behaviors, well-being, and emotional regulation.

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Section: Discussionmentioning

confidence: 99%

Pre- and postnatal exposure to legacy environmental contaminants and sensation seeking in Inuit adolescents from Nunavik

Gagnon-Chauvin,

Jacobson,

Jacobson

et al. 2023

PLOS Glob Public Health

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“…Golbabaei, Bagheri and hassani showed that mercury can be determined in biological human samples based on adsorbent by the CV-AAS. In addition, they used the nano-palladium functionalized on the silica nanoparticles for mercury removal from air by the GFSC method [20][21][22]. Moreover, some methods based on adsorbents such as MWCNTs, pyrrolic and pyridinic nitrogen doped porous graphene nanos tructure(N-D-PNG) extracted mercury from water, food, and air samples [23][24][25].…”

Section: Introductionmentioning

confidence: 99%

Rapid extraction and separation of mercury in water and food samples based on micelles and azo-thiazoles complexation before determination by UV-Vis spectrophotometry

El-Feky,

Mohammed,

Amin

et al. 2024

Anal. Method Environ. Chem. J.

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A simple and sensitive procedure has been established for analyzing mercury (II) ions spectrophotometrically in the presence of micellar medium using three azo-thiazoles complexing reagents: 2-amino-6-(thiazole-2-yldiazenyl)-3-pyridinol (C8H7N5OS), 8-hydroxy-7-(thiazole-2-yldiazenyl) quinoline-5-sulfonic acid (C12H8N4O4S2), and 1-hydroxy-4-(thiazole-2-yldiazenyl)-2-naphthoic acid (C14H9N3O3S). H1 NMR spectra validated the three azo thiazoles synthesized material. Tween 80 (polysorbate 80) and cetyltrimethylammonium bromide (C19H42BrN as molecular biology) are micellar mediums to enhance sensitivity. Absorbances were measured for Hg (II) complexation with R1, R2, and R3 at λmax of 617, 633, and 554 nm, respectively. The UV-Vis spectrophotometer showed calibration curves in the 0.2-15 mg L-1. The molar absorptivity, Sandell's sensitivity, detection, and quantification limits (LOD, LOQ) were determined. The interferences of various ions were investigated, and a statistical assessment of the results was performed. The methods have been applied for trace determination of mercury (II) in food and environmental water samples. For food samples, all samples were digested before complexation with the azo-thiazoles material at optimized pH before determination by UV-Vis spectrophotometry.

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“…There are many methods for determining and extracting heavy metals from different matrixes. Recently, some adsorbents such as nano graphene oxide modified phenyl methanethiol nanomagnetic composite, Fe3O4-supported naphthalene-1-thiolfunctionalized graphene oxide (SH-GO), CysSB/ MetSB@MWCNTs, task-specific ionic liquid immobilized on multi-walled carbon nanotubes (TSIL-MWCNTs), functionalized multi-walled carbon nanotubes (F-MWCNTs), MWCNTs@ DMP, nitrogen-doped porous graphene adsorbent (NDPG), immobilization of N-acetylcys teine on MWCNTs, thiol modified bimodal mesoporous silica (HS-UVM7), and palladium embedded on the mesoporous silica (Pd-MSN) were used for extraction and determination heavy metals in different matrixes [19][20][21][22][23][24][25][26][27][28][29][30][31]. Therefore, in this research, the design and cons truction of a pilot sludge drying reactor to dispose of the excess sludge of petrochemical indus tries (methanol) and measure the amount of fecal coliforms, and heavy metals such as cadmium, copper, lead, nickel, cobalt and zinc (Cd, Cu, Pb, Ni, Co, Zn were determined by polarography (VT).…”

Section: Introductionmentioning

confidence: 99%

Design of sludge drying package pilot for removal of excess sludge in petrochemical industries: Heavy metals determination in sludge by polarography and atomic absorption spectrometry

Hassani,

Azemi Motlagh

2024

Anal. Method Environ. Chem. J.

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In this research, according to the high amount of sludge in a petrochemical company, an iron package type of drying sludge bed was made/designed with carbon steel. Then, the drying sludge pond was filled with layers of sand with different mesh sizes. The excess sludge from the sedimentation pond was passed over this bed, and the amount of sludge removed by the bed was obtained at %96. The values of heavy metal and microbial forms were determined using the proposed method based on activated sludge after wastewater treatment. For the validation process, 10 mL of deionized water (DW) was mixed with 1.0 g of dried sludge with pure nitric acid (2% HNO3), and then the solid phase was filtered with the Whatman filter (WF). The concentration of heavy metals (As, Cd, Cu, Pb, Hg, Mo, Ni, Co, Se, Zn) in the remaining solution of sludge (mg kg-1) and wastewater (µg L-1) was extracted/ separated based on sulfur-doped graphene oxide adsorbent (SDGO) by solid-phase microextraction procedure (SPME) before being determined by the flame and hydride generation atomic absorption spectrometry (F-AAS; HG-AAS) which had similar range to the polarography analysis. The LOD, linear range and preconcentration factor (PF) for metals were obtained.

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Neuropsychological effects of long-term occupational exposure to mercury among chloralkali workers

Cited by 9 publications

References 34 publications

Pre- and postnatal exposure to legacy environmental contaminants and sensation seeking in Inuit adolescents from Nunavik

Pre- and postnatal exposure to legacy environmental contaminants and sensation seeking in Inuit adolescents from Nunavik

Rapid extraction and separation of mercury in water and food samples based on micelles and azo-thiazoles complexation before determination by UV-Vis spectrophotometry

Design of sludge drying package pilot for removal of excess sludge in petrochemical industries: Heavy metals determination in sludge by polarography and atomic absorption spectrometry

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