scholarly journals Acute and Chronic Toxicity of Mercury Exposure in Seafood and Human Populations near a Small-Scale Gold Mining Area

2016 ◽  
Vol 5 (3) ◽  
pp. 257
Author(s):  
Sofia Sofia ◽  
Adi Heru Husodo ◽  
Eko Sugiharto

<p>Gold amalgamation processes using mercury were practiced in small scale gold mining activities in Krueng Sabee, Aceh Province. Seafood (fish, mollusc, shrimp) and human hair samples were collected to assess mercury concentrations.  Acute and chronic toxicity symptoms which arise among the populations were observed as well as personal protective equipment used by gold miners. The range of mercury concentrations varied among fish, shrimp, and molluscs. The highest mercury levels were recorded in fish <em>Puntius latristriga</em> (172.299 ± 10.626 µg/g wet wt.), followed by mollusc, <em>Polymesoda caroliniana </em> (160,032 ± 0,522 µg/g wet wt.), fish <em>R.kanagurta</em> (149 ±2,000 µg/g wet wt.), shrimp <em>Penaeus monodon</em> (116.975 ± 4.807 µg/g wet wt.).  The variation of mercury concentrations in hair samples of 72 respondents were detected from 5.7 µg/g to 88.1 µg/g. The most frequent acute and chronic intoxication symptoms documented were headache, muscle cramps, cough, and aphthous ulcers. Personal protective equipment which has correlation with high mercury levels in gold miners were respirator/mask, gloves, and apparel (p &lt; 0.05). All seafood samples exceeded 0.5 µg Hg/g MoH Food and Drug Administrasion threshold level and hair samples over 10 µg/g as set by WHO tolerance limit.</p>

2016 ◽  
Vol 5 (3) ◽  
pp. 257 ◽  
Author(s):  
Sofia Sofia ◽  
Adi Heru Husodo ◽  
Eko Sugiharto

<p>Gold amalgamation processes using mercury were practiced in small scale gold mining activities in Krueng Sabee, Aceh Province. Seafood (fish, mollusc, shrimp) and human hair samples were collected to assess mercury concentrations.  Acute and chronic toxicity symptoms which arise among the populations were observed as well as personal protective equipment used by gold miners. The range of mercury concentrations varied among fish, shrimp, and molluscs. The highest mercury levels were recorded in fish <em>Puntius latristriga</em> (172.299 ± 10.626 µg/g wet wt.), followed by mollusc, <em>Polymesoda caroliniana </em> (160,032 ± 0,522 µg/g wet wt.), fish <em>R.kanagurta</em> (149 ±2,000 µg/g wet wt.), shrimp <em>Penaeus monodon</em> (116.975 ± 4.807 µg/g wet wt.).  The variation of mercury concentrations in hair samples of 72 respondents were detected from 5.7 µg/g to 88.1 µg/g. The most frequent acute and chronic intoxication symptoms documented were headache, muscle cramps, cough, and aphthous ulcers. Personal protective equipment which has correlation with high mercury levels in gold miners were respirator/mask, gloves, and apparel (p &lt; 0.05). All seafood samples exceeded 0.5 µg Hg/g MoH Food and Drug Administrasion threshold level and hair samples over 10 µg/g as set by WHO tolerance limit.</p>


2019 ◽  
Vol 19 (1) ◽  
Author(s):  
Emmanuel Kweku Nakua ◽  
Ellis Owusu-Dabo ◽  
Samuel Newton ◽  
Adofo Koranteng ◽  
Easmon Otupiri ◽  
...  

Abstract Background To determine the potential risk factors for injury, estimate the annual injury rate and examine the safety perceptions, and use of personal protective equipment among small-scale gold miners in Ghana. Methods A cross-sectional survey was carried out with 494 small-scale gold miners from four major mining districts in Ghana. A household-based approach was used to obtain a representative sample of miners. The study was conducted from June 2015 to August 2016. A systematic sampling technique was used to select households and recruit respondents to interview. Miners were asked about any mining related injury that they had sustained in the past year. A logistics regression model was employed to examine the association between risk factors and injury. Data were analyzed with STATA version 14.0. Results The annual incidence rate of mining-related injury was 289 per 1000 workers. Injuries were mainly caused by machinery/tools 66(46.1%), followed by slip/falls 46(32.2%). The major risk factor for injury was underground work (adjusted odds ratio for injury 3.19; 95% CI = 1.42–7.20) compared with surface work. Higher education levels were protective, with adjusted odds ratios of 0.48 (95% CI = 0.24–0.99) for middle school education and 0.38 (95% CI 0.17–0.83) for secondary school compared with no schooling. Only 15(3.0%) of miners reported to have had safety training in the past year and 105(21.3%) indicated that there were safety regulations at their work place. A moderate number of workers reported using work boots 178(36.0%) and hand gloves 134(27.1%), but less than 10% of workers used other personal protective equipment. Conclusion The annual injury incidence rate among small-scale gold miners is high. Potential targets for improving safety include increasing safety training, increasing use of personal protective equipment, and better understanding potential changes that can be made in the machinery and tools used in small-scale mining, which were associated with almost half of all injuries.


2021 ◽  
Vol 4 (1) ◽  
pp. 1-7
Author(s):  
Ekpereonne Esu ◽  
Utibeabasi Ekanem

Objective: Rapid urbanization and industrialization in the many low- and middle-income countries means that there is a growing demand for the welding industry. Previous studies in Nigeria, and other low- and middle-income countries have reported a significant discrepancy between awareness and consistent and appropriate use of personal protective equipment (PPE). This study assessed the awareness and utilization of PPE among small-scale welders in Calabar South, Cross River State, Nigeria. Methods: This study was conducted in Calabar South Local Government Area using a descriptive cross-sectional design. Data collection was with an interviewer-administered semi-structured questionnaire, and an observation checklist was used to monitor the use of PPE among small-scale welders. Results:  One hundred and sixteen small-scale welders were surveyed with a mean age of 34.9 ±9.1 years. Almost 90% of respondents had completed at least primary education. Eighty-one respondents (69.8%) were aware of PPE. Three-quarters of respondents (61/81) knew PPE protected the user from injury. The most frequently identified type of welding PPE among the respondents aware of PPE, were safety goggles (38.3%), hand gloves (25.9%), safety boots (19.8%), and coveralls (9.9%). 83.6% had access to PPE at work. However, only 14.4% reported using PPE consistently. Observation revealed that the PPE most frequently used, sunglasses, were not the recommended welding goggles. Conclusion:  The low utilization of PPE calls for stricter enforcement of occupational health and safety regulations among welders in the informal sector, including implementing PPE awareness programs.


1970 ◽  
Vol 2 (1) ◽  
pp. 4-11
Author(s):  
Hutamadi Hutamadi ◽  
Bambang Nugroho Widi ◽  
Sabtanto Joko Suprapto

Gold deposit at Cineam area is an epithermal gold deposit of low sulphidation type which lies about 180 km southeast of Bandung at an elevation of 400 meter above the mean sea level. The Cineam deposit is administratively belongs to Cineam Subdistrict , Tasikmalaya Regency, West Java Province, which dominantly occurred within volcanic rocks unit of Jampang Formation. Alterations developed in this area namely propylite, argillic, sericitation, and silisification, occurred in andesitic lava, volcanic breccia, and andesitic to dacitic tuff. The thickness of gold bearing quartz veins are commonly from few cm up to > 20 cm, while for the veins of higher grade of gold content the thickness are about 5 cm or less. The average grade of gold content is around 6 - 10 gr/t Au. Although Cineam gold deposits can not be classified as a big scale deposit, itsmineral genesis has an interesting characteristic to be further studied. The Cineam area representing one of the most prospect areas of gold found in the eastern part of West Java Southern Mountain Range. As the Cineam gold deposit is proportionally suitable for a small scale gold mine, the local government had already gave a mining license to a Family Firm in the form of a Village Unit Cooperation or “KUD” such as KUD Mekarjaya which had also been updated to become a B class of Exploitation License category that permitted for the realization of metallic exploitation. This action was in line with the implementation of Autonomy Policy since the year of 2001.Although KUD Mekarjaya’s mining production is relatively so small but in fact the mining activity is still being maintained to be daily earnings for the local gold miners to rely on. Within the long run of the local gold miners activity at Cineam which has been working since 1968, this condition can give rise to many well skilled and experienced labors in seeking for gold ores, in handling small scale gold mining works, and in obtaining for the bullions. In other side, on thecontrary, there are some negative actions must be kept under control such as the disposal of the waste or tailing directly into the river and the unsafely process of heating the amalgam to obtain the bullion including other improper ways done during the handling of their mining activities. Since the whole mining operation so far generally financed by individual investors it is very likely that small scale gold mining lacks of the capital needed for the mining operation. This condition is what the KUD always facing with so that management and financial matters can be a very serious problem affecting the progress of the KUD Mekarjaya From some presentation given by the CCOP-CASM Meeting in Bandung we can compare the condition of small scale mining in Indonesia. and that from other countries which have conducted good management in mining regulation and policy in relation with licensing, mining workers, tax payment and awareness of environment live in the vicinity of mining areas On account of that event this can be expected to motivate and encourage the policy anddecision makers either locally or centrally throughout Indonesia in giving more attention related to the guidance, monitoring and inspection of the implementation of small scale mining activities which is actually growing in numbers.


2018 ◽  
Vol 8 (1) ◽  
pp. 8-18
Author(s):  
Aminu U. Kaoje ◽  
Ladan Haliru ◽  
Mansur O. Raji ◽  
Umar M. Ango ◽  
Jessica T. Ango

Background: Although manual stone crushing activities provide income to families, the working conditions are often unhealthy and dangerous and employees are ignorantly exposed to different hazardous materials particularly dust particles. Objectives: To assess Knowledge, perception, and Practice of occupational safety measures related to workplace hazards among manual stone crushing workers. Methods: A descriptive cross-sectional study was conducted among 156 informal small-scale quarries for construction materials workers in Sokoto metropolis. The respondents were selected using a simple random sampling technique and data collected using interviewer-administered questionnaires. Descriptive, bivariate and binary logistic regression analyses were performed using Statistical Package for Social Sciences version 23 and results presented in tables. Results: Respondents median age was 23 years, interquartile range: 18.3 – 28.0. Adolescents and young adults accounted for 54.4% of the workforce. All the respondents were males and 69.9% had no formal education. Only 25% had good knowledge of workplace hazard and as high as 63% have a low-risk perception of the hazards. Very few (7.7%) reported the use of personal protective equipment. Only awareness of disease risk (aOR =5.25, P <0.001) was the predictor of respondents’ knowledge of workplace hazards. Predictors for risk perception level of workplace hazards were respondents’ knowledge (aOR = 0.33, p˂0.01); Aware of risk of disease (aOR =2.92, P <0.01); and employment status (aOR = 0.31, p˂0.03). Conclusions: Poor knowledge and low-risk perception of workplace hazards are very prevalent among workers and very few reported use of personal protective equipment. Training and awareness creation on workplace hazards are highly recommended.


2021 ◽  
Vol 32 (1) ◽  
pp. 103-133
Author(s):  
Fritz Biveridge

This article discusses the socio-cultural consequences of small-scale artisanal gold mining on the archaeological record and other heritage resources at Awudua Dada, located in the Prestia-Huni Valley District of the Western Region, Ghana. The settlement witnessed vibrant commercial exchanges between Wassa and Dutch traders in the mid-seventeenth century because of its abundant gold resources, much of which was exchanged for novel European trade goods such as varieties of alcoholic beverages, guns, gunpowder, and finished metal products among many others. Currently abandoned and desolate, groups of small-scale artisanal gold miners continue to prospect gold there, and along the banks and bed of the Ankobra River which lies close-by. Archaeological, historical, and ethno historical research constituted the principal methods used to derive data for the study which revealed that mining had not only negatively impacted the archaeological record and other cultural resources there but had also caused significant environmental degradation.


2021 ◽  
Vol 5 (4) ◽  
pp. 269-278
Author(s):  
M. Nasir* ◽  
Widya Rahmah ◽  
Ibnu Khaldun ◽  
M. Hasan ◽  
Rusman Rusman

The activity of using mercury in gold mining in Alue Baro Village, Meukek District is carried out freely so that it has a negative impact on the environment and the health of the miners. This study aims to determine the level of mercury in the hair of artisanal gold miners in Alue Baro village by referring to the reference that has been set by WHO. The data sample collection was carried out by taking 6 hair samples from the Alue Baro village gold miners who were selected with various types of work, namely gold processing, waste processing and waste waste until the time of the interview with a minimum working period of 1 year with sample codes R1, R2, R3, R4, R5 and R6 as control samples. The six samples were analyzed using Atomic Absorption Spectrophotometry equipped with a Mercury Analyzer which showed results, respectively, 1.01; 2.38; 1.65; 1.35; 1.66; and 0.64 ppm. The results of this study indicate that all hair samples have mercury levels above the mercury threshold that has been set by WHO, namely 1 ppm. High levels of mercury in hair samples were analyzed on exposure to mercury. Further research was conducted to analyze other metals contained in the hair of gold miners in Alue Baro village


Author(s):  
Alif Maulida Habibia ◽  
Ferry Yundiarto ◽  
Hen Sania ◽  
Karimah Permata Arinda Putri ◽  
Wia Bunga Ramadhan

Introduction: Parkinson's disease is one of the fastest-growing diseases in terms of prevalence, disability, and mortality. Exposure to environmental toxic substances, such as mercury (Hg) can increase the risk of neuronal damage and neurodegenerative diseases. Purpose: The purpose of writing this article is to determine the impact of mercury exposure on the incidence of Parkinson's disease in small-scale gold mining workers. Methods: The author searches for material through the Google Scholars, NCBI, and ScienceDirect search pages by limiting the journals published in 2015-2020. In this review, the authors conducted a study of 33 scientific articles. Results: The small-scale gold mining industry is the largest source of mercury emissions in the world. Mercury gas has a negative impact on the lungs, kidneys, liver, and nervous system. Gold miners have a very high likelihood of being exposed to metallic mercury and suffering occupational mercury intoxication. Discussion: Mercury is known to be a neurotoxin that can cause neuron death and damage to the substantia nigra and other basal ganglia nuclei. Acute mercury exposure can cause tremors, memory loss, respiratory distress, and even death. Gold miners are a group that is exposed to a lot of mercury and suffers from work-induced mercury intoxication. Conclusion: Mercury-induced parkinsonism can be identified because of its predilection for accumulation and palladium and striatum damage such as damage to the substantia nigra pars in Parkinson's disease.


2020 ◽  
Vol 10 (26) ◽  
pp. 200604 ◽  
Author(s):  
L. Cynthia Watson ◽  
Jorge L. Hurtado-Gonzales ◽  
Christopher J. Chin ◽  
Juliana Persaud

Background. Gold mining activities in forested areas across Guyana have been a common practice for more than a century. The intensification of artisanal and small-scale gold mining (ASGM) in recent decades caused by global market demand is contributing to the mobilization of mercury into aquatic systems. Indigenous populations who consume high levels of locally sourced fish are greater at risk for methylmercury poisoning from ingestion of contaminated fish. Objectives. The aim of the present study was to investigate the levels of mercury contamination and identify the risk factors associated with hair mercury levels in four indigenous communities in Guyana. Methods. Concentrations of total mercury were measured in hair samples from 99 participants from four indigenous communities in the south Rupununi region in Guyana. The findings of this study were compared with those of previous studies to assess the prevalence of mercury contamination in indigenous communities across Guyana. Results. Hair mercury levels were found to be above the World Health Organization (WHO) reference value for residents who live close to ASGM activities and who consume high quantities of locally sourced fish. Our results are not only consistent with those obtained in previous studies, but also evidence that mercury poisoning has become a generalized problem for indigenous communities in Guyana. Conclusions. Fish is the main source of protein for many riverine communities and consumption of mercury-contaminated fish poses a serious health hazard for these vulnerable populations. The situation is especially dire for community members of Parabara with 100% of participants showing elevated (>15 μg*g−1) hair mercury levels. It is therefore crucial that Parabara residents be evaluated by relevant health agencies for clinical symptoms related to mercury toxicity. Participant Consent. Obtained Ethics Approval. The study protocol was approved by the Institutional Review Board of the Ministry of Public Health, Guyana. Competing Interests. The authors declare no competing financial interests.


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