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Revista Luna Azul
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Revista Luna Azul
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https://dx.doi.org/10.60692/8s...
Other literature type . 2017
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Determinación electroquímica de plomo y cadmio en aguas superficiales

ELECTROCHEMICAL DETERMINATION OF LEAD AND CADMIUM IN SURFACE WATER
Authors: Claudia Macías Socha; Mauricio García Colmenares; Patricia Chaparro S.;

Determinación electroquímica de plomo y cadmio en aguas superficiales

Abstract

françaisLa méthode voltamétrie à onde carrée (OSWV) a été validée pour la quantification de Cd2+ et Pb2+ dans les eaux de surface. L'étude a été réalisée en utilisant la solution Britton-Robinson comme électrolyte de support à pH 4,8, le charbon vitreux comme électrode de travail, Ag/AgCl comme électrode de référence et le platine comme électrode auxiliaire. La technique présente une limite de détection 211 µg/L pour Pb et 268 µg/L pour Cd. L'application de la technique voltamétrique OSWV a été réalisée dans les eaux de la gorge Las Torres du secteur du parc industriel à Sogamoso (Colombie), avec une concentration de : Pb2+ 0,750±0,067 mg/L et Cd2+ 0,570±0,071 mg/L, qui dépassent les limites maximales établies par les normes nationales (décret 4728/2010) et internationales en vigueur pour les eaux usées. Les résultats ont été contrastés par la méthode de référence spectrophotométrie d'absorption atomique acceptée comme référence, permettant de déduire que la méthode électrochimique génère des résultats avec un niveau de confiance de 95 %. EnglishThe square wave electrochemical voltammetry method (OSWV) to quantification of cadmium and lead in surface waters was validated. It used a Britton-Robinson buffer as solution supporting electrolyte to pH 4.8, working electrode glassy carbon, Ag/AgCl as reference electrode and platinum as counter electrode. The limit of detection determined was 211 µg/L for Pb and 268 µg/L for Cd. The application of voltammetric technique OSWV was performed in waters of the creek Towers Industrial Park Sector in Sogamoso (Colombie). The ions concentration in the samples analyzed was 0.750±0.067 mg/L for Pb2+ and 0.570±0.071 mg/L for Cd2+, exceeding the national and international standards limits for wastewater. The results obtained by voltammetry were compared with atomic absorption method spectrophotometer traditionally accepted, allowing deducing that the voltammetric method generates results with a confidence level of 95%.

espanolEl metodo voltametria de onda cuadrada (OSWV) fue validado para la cuantificacion de Cd2+ y Pb2+ en aguas superficiales. El estudio fue realizado usando solucion Britton-Robinson como electrolito de soporte a pH 4,8, carbon vitreo como electrodo de trabajo, Ag/AgCl como electrodo de referencia y platino como electrodo auxiliar. La tecnica presenta un limite de deteccion 211 µg/L para Pb y 268 µg/L para Cd. La aplicacion de la tecnica voltametrica OSWV fue realizada en aguas de la quebrada Las Torres del sector Parque Industrial en Sogamoso (Colombia), hallando una concentracion de: Pb2+ 0,750±0,067 mg/L y Cd2+ 0,570±0,071 mg/L, los cuales sobrepasan los limites maximos establecidos por las normas nacionales (Decreto 4728/2010) e internacionales vigentes para aguas residuales. Los resultados fueron contrastados por el metodo de referencia espectrofotometria de absorcion atomica aceptado como referencia, permitiendo deducir que el metodo electroquimico genera resultados con un nivel de confianza del 95%. EnglishThe square wave electrochemical voltammetry method (OSWV) to quantification of cadmium and lead in surface waters was validated. It used a Britton-Robinson buffer as solution supporting electrolyte to pH 4.8, working electrode glassy carbon, Ag/AgCl as reference electrode and platinum as counter electrode. The limit of detection determined was 211 µg/L for Pb and 268 µg/L for Cd. The application of voltammetric technique OSWV was performed in waters of the creek Towers Industrial Park Sector in Sogamoso (Colombia). The ions concentration in the samples analyzed was 0.750±0.067 mg/L for Pb2+ and 0.570±0.071 mg/L for Cd2+, exceeding the national and international standards limits for wastewater. The results obtained by voltammetry were compared with atomic absorption method spectrophotometer traditionally accepted, allowing deducing that the voltammetric method generates results with a confidence level of 95%.

spanish The square wave voltammetry (OSWV) method was validated for the quantification of Cd2+ and Pb2+ in surface water. The study was performed using Britton-Robinson solution as support electrolyte at pH 4.8, glassy carbon as working electrode, Ag/AgCl as reference electrode and platinum as auxiliary electrode. The technique has a detection limit of 211 µg/L for Pb and 268 µg/L for Cd. The application of the OSWV voltametric technique was carried out in waters of the Las Torres creek of the Industrial Park sector in Sogamoso (Colombia), finding a concentration of: Pb2+ 0.750±0.067 mg/L and Cd2+ 0.570±0.071 mg/L, which exceed the maximum limits established by national (Decree 4728/2010) and international standards in force for wastewater. The results were contrasted by the atomic absorption spectrophotometry reference method accepted as a reference, allowing us to deduce that the electrochemical method generates results with a 95% confidence level. EnglishThe square wave electrochemical voltammetry method (OSWV) to quantification of cadmium and lead in surface waters was validated. It used a Britton-Robinson buffer as solution supporting electrolyte to pH 4.8, working electrode glassy carbon, Ag/AgCl as reference electrode and platinum as counter electrode. The limit of detection determined was 211 µg/L for Pb and 268 µg/L for Cd. The application of voltammetric technique OSWV was performed in waters of the creek Towers Industrial Park Sector in Sogamoso (Colombia). The ions concentration in the samples analyzed was 0.750±0.067 mg/L for Pb2+ and 0.570±0.071 mg/L for Cd2+, exceeding the national and international standards limits for wastewater. The results obtained by voltammetry were compared with atomic absorption method spectrophotometer traditionally accepted, allowing deducing that the voltammetric method generates results with a confidence level of 95%.

الإسبانية تم التحقق من صحة طريقة قياس الجهد الموجي المربع (OSWV) للقياس الكمي لـ Cd2+ و Pb2+ في المياه السطحية. تم إجراء الدراسة باستخدام محلول بريتون روبنسون كإلكتروليت داعم عند درجة الحموضة 4.8، والكربون الزجاجي كإلكترود عامل، و Ag/AgCl كإلكترود مرجعي والبلاتين كإلكترود مساعد. لهذه التقنية حد كشف قدره 211 ميكروغرام/لتر للرصاص و 268 ميكروغرام/لتر للقرص المضغوط. تم تطبيق تقنية الفولتميتريك OSWV في مياه خور لاس توريس في قطاع المجمع الصناعي في سوجاموسو (كولومبيا)، حيث تم العثور على تركيز: Pb2 + 0.750±0.067 mg/L و Cd2 + 0.570±0.071 mg/L، والتي تتجاوز الحدود القصوى التي حددها المرسوم الوطني (المرسوم 4728/2010) والمعايير الدولية المعمول بها لمياه الصرف الصحي. تمت مقارنة النتائج بطريقة القياس الطيفي للامتصاص الذري المقبولة كمرجع، مما يسمح لنا باستنتاج أن الطريقة الكهروكيميائية تولد نتائج بمستوى ثقة 95 ٪. تم التحقق من صحة طريقة قياس الجهد الكهروكيميائي للموجة المربعة (OSWV) لتحديد كمية الكادميوم والرصاص في المياه السطحية. واستخدمت عازلة بريتون روبنسون كمحلول يدعم الإلكتروليت إلى درجة الحموضة 4.8، والكربون الزجاجي للقطب العامل، و Ag/AgCl كقطب مرجعي والبلاتين كقطب مضاد. كان حد الكشف المحدد 211 ميكروغرام/لتر للرصاص و 268 ميكروغرام/لتر للقرص المضغوط. تم تنفيذ تطبيق تقنية القياس الفولطية OSWV في مياه قطاع الحديقة الصناعية لأبراج الخور في سوجاموسو (كولومبيا). كان تركيز الأيونات في العينات التي تم تحليلها 0.750±0.067 ملغ/لتر لـ Pb2+ و 0.570±0.071 ملغ/لتر لـ Cd2 +، متجاوزًا حدود المعايير الوطنية والدولية لمياه الصرف الصحي. تمت مقارنة النتائج التي تم الحصول عليها بواسطة قياس الجهد مع مقياس الطيف الضوئي بطريقة الامتصاص الذري المقبولة تقليديًا، مما يسمح باستنتاج أن طريقة قياس الجهد تولد نتائج بمستوى ثقة 95 ٪.

Keywords

Composite material, vitreous carbon, carbón vítreo, On-line Monitoring of Wastewater Quality, pH Sensing, voltagrama, Bioengineering, Industrial and Manufacturing Engineering, Anodic Stripping Voltammetry, Mica, Electrochemistry, Advances in Chemical Sensor Technologies, heavy metals, FOS: Chemical engineering, metales pesados, Chemical Engineering, Voltametría, voltammogram, Materials science, Chemistry, Electrochemical Detection of Heavy Metal Ions, Physical Sciences, Environmental Science, Voltammetry

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
2
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