Simple and rapid method for the determination of mercury in human hair by cold vapour generation atomic fluorescence spectrometry

Astolfi, Maria Luisa; Protano, Carmela; Marconi, Elisabetta; Piamonti, Daniel; Massimi, Lorenzo; Brunori, Marco; Vitali, Matteo; Canepari, Silvia

doi:10.1016/j.microc.2019.104186

Cited by 28 publications

(16 citation statements)

References 79 publications

(129 reference statements)

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“…All solutions were prepared using deionized water (resistivity, ≤18.3 MΩ cm) generated by an Arioso Power I RO-UP Scholar UV deionizer (Human Corporation, Songpa-Ku, Seoul, Korea). The instrumental conditions are presented in previous studies [ 45 , 46 ]. Standard Hg solutions for CVAFS calibration range from 0.04 to 1.5 μg L −1 were prepared by diluting adequate stock standard volumes (1002 ± 7 mg L −1 ; SCP Science, Baie D’Urfé, Canada) in 3% HCl.…”

Section: Methodsmentioning

confidence: 99%

Urinary Mercury Levels and Predictors of Exposure among a Group of Italian Children

Astolfi

Vitali

Marconi

et al. 2020

IJERPH

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Urinary mercury (Hg) levels are suitable to assess long-term exposure to both elemental and inorganic Hg. In this study, the urinary Hg levels of 250 children (aged 6–11 years) from three areas with different anthropogenic impacts in the Rieti province, central Italy, were assessed. The Hg concentrations were in the range of 0.04–2.18 µg L−1 with a geometric mean equal to 0.18 µg L−1 [95% confidence interval (CI), 0.17–0.20 µg L−1] or 0.21 µg g−1 creatinine (95% CI, 0.19–0.23 µg g−1 creatinine), and a reference value calculated as 95th percentile of 0.53 µg L−1 (95% CI, 0.44–0.73 µg L−1) or 0.55 µg g−1 creatinine (95% CI, 0.50–0.83 µg g−1 creatinine). In all cases, urinary Hg data were below the HBM-I values (7 µg L−1 or 5 µg g−1 creatinine) established for urine, while the 95th percentile was above the German Human Biomonitoring Commission’s RV95 (0.4 µg L−1) set for children without amalgam fillings. A significant correlation (p < 0.05) was found between creatinine-corrected results and residence area, with higher urinary Hg levels in children living in the industrial area. Multiple linear regression analysis showed that creatinine was the main predictor of urinary Hg.

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Section: Methodsmentioning

confidence: 99%

Urinary Mercury Levels and Predictors of Exposure among a Group of Italian Children

Astolfi

Vitali

Marconi

et al. 2020

IJERPH

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“…Hair grows at an average rate of one cm per month [38] and, thus, our analysis was intended to estimate the total Hg exposure for the two-month period preceding analysis. Hair total Hg content was determined by thermal decomposition-gold amalgamation atomic absorption spectroscopy, as described in a previous paper [39]. Briefly, when the sample arrived to the laboratory, the hair strands were further cut into smaller pieces (3-5 mm) using stainless scissor.…”

Section: Chemical Analysismentioning

confidence: 99%

Biomonitoring of Mercury in Hair among a Group of Eritreans (Africa)

Astolfi

Protano

Marconi

et al. 2020

IJERPH

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Small-scale or artisanal mining, using gold-mercury amalgamation to extract gold from ore, is a significant source of exposure for the workers and nearby populations. Few studies on hair mercury (Hg) have been conducted in Africa despite the fact that Africa has several gold deposits. No studies have been conducted in Eritrea that is one of the emerging gold producing countries in Africa. The aim of the study was to assess the Hg concentration in hair samples (n = 120) of a population living in Asmara, capital of Eritrea, and to evaluate the influence of some factors on the Hg levels in hair. Information on age, height, weight, occupation, smoking and fish consumption of participants were collected via questionnaire. Hair Hg concentration was significantly higher among women compared to men (p < 0.001) and among women preparing spicy products in Medeber market compared to those who did other jobs (p = 0.010). These results highlight the need for routine biomonitoring surveys and for health promotion campaigns devoted to local decision makers and workers.

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“…Various analytical techniques are used for the determination of metals in real samples, including atomic absorption spectrometry (AAS), atomic fluorescence spectrometry (AFS), X-ray fluorescence spectrometry (XRF), inductively coupled plasma atomic emission spectrometry (ICP-AES) and inductively coupled plasma mass spectrometry (ICP-MS). [7][8][9][10][11][12] However, the direct analysis of real samples by these techniques is generally restricted due to the extremely low concentrations of the analytes and complex matrix interferences. This is the reason why sample pretreatment methods are often necessary prior to analysis.…”

Section: Introductionmentioning

confidence: 99%

Dispersive Micro-solid Phase Extraction with Fibrous TiO2@g- C3N4 Nanocomposites Coupled with ICP-MS for the Determination of Cobalt and Nickel in Environmental and Biological Samples

Chen¹,

Liu²,

Yan³

et al. 2020

At.Spectrosc.

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In this work, fibrous TiO2@g-C3N4 nanocomposites (FTGCNCs) were used for dispersive micro-solid phase extraction of Co and Ni prior to their determination by inductively coupled plasma mass spectrometry. As a new adsorbent, the surface on FTGCNCs have rich functional groups such as-NH2,-NH-and =N-, which can selectively adsorb target ions. The adsorption behaviors of Co and Ni on FTGCNCs were investigated. The results indicated that the analytes were quantitatively retained on FTGCNCs in the pH range of 5.0-8.0 and eluted completely with 1.0 mL of 0.5 mol L-1 HNO3 solution. The main factors influencing the preconcentration and determination of the analytes were investigated in detail, including the pH of the sample solution, dosage of adsorbent, extraction/elution time, elution parameters and sample volumes. Under the optimum conditions, the detection limits of this method were 0.12 pg mL-1 and 1.34 pg mL-1 for Co and Ni, respectively. The relative standard deviations were 3.9% for Co and 4.8% for Ni (n=9, c=1.0 ng mL-1). This method was used for the determination of trace/ultra-trace Co and Ni in environmental water samples with satisfactory results. In order to verify this method, three certified reference materials of stream sediment, human hair and mussel were analyzed using the proposed method, and the determined results were in agreement with the certified values.

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Simple and rapid method for the determination of mercury in human hair by cold vapour generation atomic fluorescence spectrometry

Cited by 28 publications

References 79 publications

Urinary Mercury Levels and Predictors of Exposure among a Group of Italian Children

Urinary Mercury Levels and Predictors of Exposure among a Group of Italian Children

Biomonitoring of Mercury in Hair among a Group of Eritreans (Africa)

Dispersive Micro-solid Phase Extraction with Fibrous TiO2@g- C3N4 Nanocomposites Coupled with ICP-MS for the Determination of Cobalt and Nickel in Environmental and Biological Samples

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