ABSTRACT
The aim of this study was to investigate the presence of arsenic, lead and cadmium residues in samples of liver, kidney and muscle of poultry and swine during the years from 2002 to 2008. A total of 1978 samples were analyzed: 1031 of poultry and 947 of swine from Brazilian slaughterhouses. The samples were analyzed at the National Agricultural Laboratory using the atomic absorption spectrometry technique. In poultry, the arsenic residues were detected in 53.6% of liver samples, although no results have exceeded the MRL. In kidneys, 39.7% of the samples showed measurable residues and there was no violation of the limits. Regarding lead, there were 5 contaminated liver samples and 24 contaminated kidney samples (1.5 and 3.6% respectively). In muscle tissue there was only one sample with residues...
Objetivou-se investigar a presença de resíduos de arsênico, chumbo e cádmio em amostras de fígado, rins e músculo de aves e suínos, durante os anos de 2002 a 2008. Um total de 1.978 amostras foi analisado: 1031 de aves e 947 de suínos provenientes de matadouros brasileiros. As amostras foram analisadas no Laboratório Nacional Agropecuário (Lanagro), sendo utilizada a técnica de espectrometria de absorção atômica. Em aves, os resíduos de arsênico foram detectados em 53,6% das amostras de fígado, embora sem exceder o LMR. Nos rins, 39,7% das amostras mostraram resíduos mensuráveis e não houve violação dos limites. Em relação ao chumbo, cinco amostras de fígado e 24 de amostras de rins estavam contaminadas (1,5 e 3,6%, respectivamente). No tecido muscular, houve apenas uma amostra com resíduos. Para o cádmio, 3,8% das amostras apresentavam valores abaixo do LMR. Resíduos de cádmio foram encontrados em 110 amostras de rins (16,3% testados), mas apenas uma ultrapassou o limite máximo permitido pela legislação nacional. Em suínos, resíduos de arsênico foram detectados em 15,3% das amostras de fígado, sem exceder o LMR. Nos rins, 14,2% das amostras apresentaram resíduos mensuráveis...
Subject(s)
Animals , Arsenic/isolation & purification , Birds/metabolism , Cadmium/isolation & purification , Lead/isolation & purification , Liver , Kidney , Swine/metabolism , Permissible Limit of Occupational Hazards/analysis , Maximum Allowable Concentration , Metals, Heavy/analysisABSTRACT
El objetivo de esta investigación fue realizar una revisión de los níveles de plomo en sangre en niños venezolanos reportados en los artículos científicos publicados entre los años 1993-2996. El estudio fue del tipo documental y las bases de datos consultadas fueron PubMed/MEDLINE, EBDCO, ProQuest, Scielo, REVENCYT, FUNDACID BC UC, utilizando las palabras clave: niños, níveles de plomo en sangre, revisión, Venezuela. En total fueron recopilados 13 artículos, el 85% de estos fueron del tipo descriptivo. La mayor proporción (39%) de estudios revisados fueron clasificados como ambientales. La media de las medias de los níveles de plomo en sangre reportadas en los estudios fue de 12,61 ± 3,95% µg/dL, IC95%[10,23; 14,99 µg/dL]. En el 84,6% de las investigaciones realizadas se observaron medias de plomo en sangre en niños mayores a su límite permisible (10 µg/dL) Esta investigación podría servir de evidencia sobre los niveles de plomo observados en niños venezolanos, contribuyendo con el análisis y discusión de futuras investigaciones.
The objetive of this research was to conduct a review of blood lead levels in venezuelan children reported in the scientific articles published between the years 1993-2006. A documentary study was carried out, databases consulted were PubMed/MEDLINE, EBSCO, ProQuest, Scielo, REVENCYT; FUNDACID BC UC, using key word: children, levels of blood lead, review, Venezuela. Were collected in total 13 articles, 85% of these were descriptive. The largest proportion (39%) of studies reviewed were classified as environmental. The average of the average levels of blood lead reported in the studies was 12.61 ± 3.95 µg/dL, IC95% [10.23; 14.99 µg/dL]. In the 84.6% of investigations carried out in children whit blood lead were it was observed an average of blood lead higher to the allowable limit (10 µg/dL). This research could provide evidence on the blood lead levels observed in venezuelan children, helping with the analysis and discussion of future research.