Journal of Environmental Health 2013 Abstracts - page 6

from a local market and used to determine the commercial laboratory’s detection and
reporting limits for arsenic and chromium for these food products. Arsenic was not
reported above the detection limits in either the pilot or subsequent study, but chromium
was detected at concentrations up to 0.30 parts per million in a pilot test sample and
lower concentrations in the subsequent study. This study suggests that the sodium lactate
in the sampled products was diluted enough for the arsenic concentration to be below the
laboratory detection limit. Chromium was detected and may be an unaccounted source of
chromium in diets of vulnerable populations.
Mutagenicity and Genotoxicity of Water Treated for Human Consumption Induced
by Chlorination By-products
Elizabeth Rincón-Bedoya, PhD
Nelly Velásquez
Jairo Quijano, PhD
Claudio Bravo-Linares, PhD
Abstract
Water used for human consumption may contain mutagens and carcinogens
generated during the disinfection process with chlorine. In the study described in this
article, the mutagenicity and genotoxicity of water samples taken from the San Cristobal
treatment plant in Medellin, Colombia, were evaluated. Short-term mutagenic and
genotoxic assays using Ames and comet assay, respectively, were employed to examine
the genotoxic activity of the extracts of these water samples. Two samples were taken
before and after the chlorination process. The treated water samples without chlorination
did not show mutagenic effects using the Ames test, while the chlorinated samples
produced mutagenic activity in both strains. A dose-response relationship for the comet
assay was obtained only in the chlorinated samples. MX (3-chloro-4-[dichloromethyl]-5-
hydroxy-2[5H]-furanone), E-MX ([E]-2-chloro-3-[dichloromethyl]-4-oxobutenoic acid),
and some trihalomethanes were detected at low concentrations. These concentrations
were enough, however, to cause detectable mutagenic and genotoxic activity in the
extracts of chlorinated water samples.
Mercury, Lead, and Cadmium in Umbilical Cord Blood
Ewa King, PhD,
State Health Laboratories, Rhode Island Department of Health
Susanna R. Magee, MPH, MD,
Warren Alpert Medical School of Brown University
Grace Shih, MD,
Memorial Hospital of Rhode Island
Dhitinut Ratnapradipa, PhD,
Rhode Island Department of Health
Daniela N. Quilliam, MPH,
Rhode Island Department of Health
John Morton, MD,
Memorial Hospital of Rhode Island
Abstract
The study described in this article aimed to determine if measurable levels of
mercury, lead, and cadmium are detected in the umbilical cord blood specimens collected
in a community hospital in Rhode Island and if prenatal exposure correlates with
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