A simple automated system for the routine production of 99mTc by methyl-ethyl-ketone extraction.

استخراج تولوئن و متیل اتیل کتون از نمونه‌های آبی به روش به‌دام‌اندازی توسط سوزن و جاذب سنتز شده بر پایه ترکیبات نانو

Background and Aims:Nowadays, many different techniques to extraction of chemical compounds from aquatic  samples have been introduced, for examples techniques based on the use of needles that were packed with some sorbents. Considering that so far no synthesis sorbent based on single-walled carbon nanotubes and sol-gel techniques for the extraction of toluene and methyl ethyl ketone from ...

طراحی و توسعه یک تله سوزنی مبتنی بر جاذب PDMS جهت ریزاستخراج تولوئن و متیل اتیل کتون از نمونه های آبی به روش فضای فوقانی دینامیک

Introduction: Due to the widespread use of toxic chemicals in most workplaces that can lead to toxic effects on human, various chemical extraction technique have been defined for analysis these toxic substances in air, water and biological samples. The purpose of this research is extraction of  toluene and methyl ethyl ketone from aquatic samples with needle trap device and  one co...

Abatement of Benzyl Alcohol and Methyl Ethyl Ketone (MEK) from Polluted Air Over Nanostructured Mn -Supported Alumina Catalyst

ارزیابی ریسک بهداشتی مواجهه شغلی با عوامل زیان آور شیمیایی : مطالعه موردی در یک صنعت پتروشیمی

  Background and aims In the most chemical process industries, workers are exposed to various chemicals and working with these chemicals without considering safety and health considerations can lead to different harmful symptoms. For deciding about control measures and reducing risk to acceptable level , it is necessary to assess the health risk of exposing to harmful chemicals by aid of specif...

Extraction of Traces of Copper as Tetra-Butylammonium Tetrathiocyanato Copper (II) and Its Spectrophotometric Determination Using Eriochrome Black T

An extraction-spectrophotometric method for the determination of traces of copper (II) is described. The method is based on the quantitative extraction of copper as tetrabutylammonium tetrathiocyanato copper (II) into methyl isobutyl ketone, followed by spectrophotometric determination, using eriochrome black T as a metallochromic indicator. The red-violet mixed complex of copper absorbs at...