scholarly journals Arsenic Determination in Water Supplies for Human Consumption of the Province of Cartago, Costa Rica

2011 ◽  
Vol 52 (2) ◽  
Author(s):  
Virginia Montero Campos ◽  
Jaime Quesada Kimsey ◽  
Aura Ledezma Espiniza ◽  
Jose A Sandoval Mora
Keyword(s):  
Costa Rica ◽  
Hydride Generation ◽  
Inorganic Arsenic ◽  
Costa Rican ◽  
Human Consumption ◽  
Flame Atomic Absorption ◽  
The Us ◽  
Risk Areas ◽  
Arsenic Determination ◽  
Maximum Limit

Aim: To disclose scientific knowledge about hydroarsenicism in Latin America, as well as to determine the presence of arsenic in water used for human consumption in risk areas of Costa Rica, specifically at the Central, Oreamuno, Paraíso and Alvarado counties of the province of Cartago. Methods: Quantification of inorganic arsenic by hydride generation and flame atomic absorption, according to method 7062 of the US Agency of Environmental Protection. Results:  None of the analyzed samples surpassed the maximum limit of 10 µg/L allowed by the present Costa Rican legislation. Conclusion: Even though sampled areas are of volcanic nature and therefore of arsenic risk, the population consumes water of direct underground origin with a great superficial influence and little or no contact to deeper volcanic rock, thus not contaminated with arsenic. 

scholarly journals Optimization and Validation of Arsenic Determination in Foods by Hydride Generation Flame Atomic Absorption Spectrometry

2002 ◽  
Vol 85 (1) ◽  
pp. 122-127 ◽  
Author(s):  
Charles Kabengera ◽  
Patricia Bodart ◽  
Philippe Hubert ◽  
Leopold Thunus ◽  
Alfred Noirfalise
Keyword(s):  
Hydrochloric Acid ◽  
Atomic Absorption ◽  
Sodium Tetrahydroborate ◽  
Hydride Generation ◽  
Absorption Spectrometry ◽  
Spectrometric Method ◽  
Wet Digestion ◽  
Flame Atomic Absorption ◽  
Arsenic Determination ◽  
Atomic Absorption Spectrometric

Abstract A hydride generation flame atomic absorption spectrometric method was developed and optimized to quantitate arsenic (As) in foods. A wet digestion of the samples with HNO3 + H2O2 was performed and excess oxidants were eliminated by addition of hydrochloric acid and urea. As5+ in As3+ was then reduced by potassium iodide. The As3+ solution was analyzed by generation of arsine with sodium tetrahydroborate. As determination ranged from 2.5 to 20 μg/L, with a determination coefficient of 0.997. The limits of detection (LOD) and quantitation (LOQ) were 0.6 and 2.1 μg/L, respectively. The method was validated and good results were obtained for recovery, precision, accuracy, LOD, and LOQ. This method is now used to analyze foods from Rwanda.

scholarly journals Inorganic Arsenic Determination in Food: A Review of Analytical Proposals and Quality Assessment Over the Last Six Years

2016 ◽  
Vol 71 (1) ◽  
pp. 25-69 ◽  
Author(s):  
Toni Llorente-Mirandes ◽  
Roser Rubio ◽  
José Fermín López-Sánchez
Keyword(s):  
Quality Assessment ◽  
Analytical Methods ◽  
Certified Reference Materials ◽  
Inorganic Arsenic ◽  
Human Consumption ◽  
Safety And Health ◽  
Low Concentrations ◽  
Recent Developments ◽  
Food Commodities ◽  
Arsenic Determination

Here we review recent developments in analytical proposals for the assessment of inorganic arsenic (iAs) content in food products. Interest in the determination of iAs in products for human consumption such as food commodities, wine, and seaweed among others is fueled by the wide recognition of its toxic effects on humans, even at low concentrations. Currently, the need for robust and reliable analytical methods is recognized by various international safety and health agencies, and by organizations in charge of establishing acceptable tolerance levels of iAs in food. This review summarizes the state of the art of analytical methods while highlighting tools for the assessment of quality assessment of the results, such as the production and evaluation of certified reference materials (CRMs) and the availability of specific proficiency testing (PT) programmes. Because the number of studies dedicated to the subject of this review has increased considerably over recent years, the sources consulted and cited here are limited to those from 2010 to the end of 2015.

Parity without Equality

2018 ◽  
Author(s):  
Jennifer M. Piscopo
Keyword(s):  
Costa Rica ◽  
Party System ◽  
Political Representation ◽  
Costa Rican ◽  
Women In Politics ◽  
Negative Consequences ◽  
Economic Problems ◽  
Crisis Of Representation ◽  
Female Legislators ◽  
Female President

Jennifer M. Piscopo examines how the crisis of representation in Costa Rica has placed a ceiling on gender equality in representation. The restructuring of the Costa Rican party system and party fragmentation has made electing multiple candidates from any one ballot more difficult. Top spots have become even more prestigious and more likely to be allocated to men, which reduces women’s electoral chances. Corruption scandals, party breakdown, citizen frustration, and economic problems tainted the administration of the nation’s first female president, Laura Chinchilla. Female legislators have often worked to promote women’s issues and feminist policies, but Chinchilla eschewed feminism, even though several of her policies did benefit women. Overall, her failed presidency may create difficulties for other women seeking top political offices and could have negative consequences for views of women in politics. These challenges notwithstanding, Piscopo concludes that Costa Rica remains at the vanguard of women’s political representation in Latin America.

What's eating North America's edible insect industry? An examination of psychological, cultural and regulatory barriers

2021 ◽  
pp. 1-4
Author(s):  
Christl Li ◽  
Sean B. Cash ◽  
Julie Lesnik ◽  
Timothy S. Griffin ◽  
Joel Mason ◽  
...  
Keyword(s):  
Nutritional Value ◽  
Environmental Benefits ◽  
Human Consumption ◽  
Edible Insects ◽  
The European Union ◽  
Edible Insect ◽  
The Us ◽  
Structural Barrier ◽  
Regulatory Barriers ◽  
Specific Regulation

Abstract Although research has demonstrated the positive nutritional value and environmental benefits associated with edible insect consumption, several factors challenge the growth and development of the edible insect industry for human consumption in the US and Canada. Cultural and psychological factors account for much of the aversion US and Canadian consumers display. The absence of specific regulation also constitutes a structural barrier to more widespread production and sale of edible insects. Compared to the US, the European Union has a more developed edible insect industry and has enacted legislation that removes some of the barriers. As consumer awareness of the putative health benefits of edible insects increases, more comprehensive regulations may emerge to keep pace with the growth of this industry. Overall, a multi-disciplinary approach that addresses both benefits and barriers to consumption is needed to facilitate a robust market for edible insects in the US and Canada.

A simple paper-based approach for arsenic determination in water using hydride generation coupled with mercaptosuccinic-acid capped CdTe quantum dots

2020 ◽  
Vol 12 (21) ◽  
pp. 2718-2726
Author(s):  
Oraphan Thepmanee ◽  
Kanlaya Prapainop ◽  
Obnithi Noppha ◽  
Nuanlaor Rattanawimanwong ◽  
Weena Siangproh ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Hydride Generation ◽  
Cdte Quantum Dots ◽  
Mercaptosuccinic Acid ◽  
Cdte Qds ◽  
Arsenic Detection ◽  
Detection Probe ◽  
Arsenic Determination

Paper-based device with MSA-CdTe QDs as arsenic detection probe is presented.

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