جستجوی مقالات مرتبط با کلیدواژه « toxic elements » در نشریات گروه « پزشکی »

The present study aimed to evaluate the levels of lead (Pb), arsenic (As), and mercury (Hg), as well as peroxide values in 52 samples of lipstick in Karaj, Iran. The Varian Spectra AA-220 atomic absorption spectrometer was utilized to determine the concentration of metals. The average levels of the analyzed metals were in good accordance with the standard levels set by the Institute of Standards and Industrial Research of Iran (ISIRI 14622). The obtained results illustrated that the mean (±SE) levels of Pb, As, and Hg were 3.029±0.787, 0.546±0.090, and 0.044±0.002 µg/g, respectively. Moreover, the mean peroxide value (2.173±0.314 mEq/kg) was lower than the maximum amount set by ISIRI 14622 )10 mEq/kg). Therefore, a continuous monitoring program to ensure acceptable quality of these products along with an enhancement in the consumers’ awareness of the potential hazards of the regular use of cosmetic products is highly recommended.

 Despite the widespread use of medicinal plants in the food basket of many families, using healthy herbs with safe nutritional standards is one of the necessities.

In this review, the required data and related keywords (such as “latest methods of measuring and analyzing toxic elements in medicinal plants and foods, etc.) were collected from databases such as Google Scholar, ScienceDirect, Scopus, SID, PubMed, Elsevier, Springer, etc. Then we focused on accurate works related to toxic elements and medicinal plants.

First, we introduced the issue of toxic elements in foods, especially medicinal plants, with a new perspective. Then, some tools related to measuring toxic elements in herbs and some recent research were investigated. Further, an attempt was made to show the importance of the issue. Finally, the effects of toxic elements on various parts of the human body were discussed.

  An overview of using safe medicinal plants was presented while providing effective solutions such as identifying contaminated areas, using soil stabilizers, and preventing the leaching of toxic elements into farmland.

Toxic elements (heavy metals) generally include a wide range of elements such as cadmium, lead, arsenic, etc. which have a significant impact on water pollution, especially human drinking water. The main purpose of this study is to investigate the effect of these metals on the level of drinking water pollution in Iran. This research is a systematic review article, conducted by searching the Scholar, SID, Science Direct, PubMed, and MAGIRAN databases for related published papers from 2000 to 2019. Several keywords have been searched including heavy metals, drinking water, water pollution index, urban water supply network, and GIS. Searching the database, 812 articles have been found, out of which 190 articles were picked out by reviewing their titles and abstracts, and finally, 50 articles were selected by reading the entire text. Out of these 50 articles, 25 articles were selected for review due to their high conceptual relationship with this study. According to the results, in 54.17% of the studies, the concentration of heavy metals was higher than the standards of Iran and WHO. The concentration of toxic elements Chromium, Arsenic, Cadmium, Lead, Copper, Iron and Manganese, in 18.75, 30, 16.66, 33.33, 7.69, 33.33 and 25% of the articles were higher than the permissible limits, respectively. In general, natural factors such as geology and human factors such as the effects of effluent, waste, metal and worn water supply networks caused pollution in drinking water.

The existence of radioactive isotopes and toxic elements in water poses a potential threat to public health. Due to the high consumption of bottled water, the focus of this study is on measuring the concentration of radioactive isotopes (222Rn and 226Ra) and toxic elements (Cr, Mn, Co, Ni, Cu, Zn, Cd, Pb) in different brands of bottled drinking water.

Therefore, twenty-four samples of bottled water have been carefully selected from local markets in Saudi Arabia. Nuclear track detector of type CR-39 and Inductive Coupled Plasma-Mass Spectrometer were used to measure radioactivity concentrations and toxic elements, respectively.

It is observed that the activity concentration of 222Rn and 226Ra in all samples was lower than the recommended values set by different agencies such as WHO, and EPA. The annual effective dose for three age groups (infants, children, and adults) was calculated from the concentration of 222Rn. These measurements provide basic information for consumers who could be at risk of exposure through bottled water consumption.

then all types of bottled drinking water are suitable and safe for daily population ingestion.