Teledyne Leeman Labs Blog

Heavy Metals in Reagent Chemicals

Posted by Betsey Seibel on Aug 30, 2016 2:27:59 PM

When it comes to analytical testing, there is a single organization that sets the requirements and develops the methods for determining the purity of reagent chemicals, the American Chemical Society (ACS).

 

Teledyne Leeman Labs recently completed an analysis of reagent chemicals to determine their ultratrace elemental levels. The purpose of the analysis was to “demonstrate the ability of the Teledyne Leeman Lab’s Prodigy7 simultaneous ICP-OES, to quickly and accurately determine ultratrace elemental levels in selected reagent grade chemicals.” The company performed the analysis using procedures developed by the ACS. Results were then compared with ACS specifications.

 

Read More

Tags: ICP-OES

Analyzing Beverages for Mineral and Heavy Metal Conten

Posted by Betsey Seibel on Aug 5, 2016 3:23:11 PM

Teledyne Leeman Labs recently used its Prodigy7 ICP-OES to analyze beverages for mineral and heavy metal content. The goal of the analysis was to demonstrate the effectiveness of the system and method in measuring mineral and heavy metal content in a variety of beverage samples. The results of the analysis were compared with the drinking water standards established by the U.S. Environmental Protection Agency and the World Health Organization.

 

Read More

Tags: mercury analysis

Peru’s Mercury Emergency

Posted by Betsey Seibel on Jul 26, 2016 11:58:18 AM

Illegal gold mining operations in Peru have forced the Peruvian government to declare a state of emergency for the next two month. While the gold is valuable, the extracted process from surrounding areas has created a major health problem for local residents.

Read More

Tags: mercury

Introducing the Prodigy Plus Inductively Coupled Plasma – Optical Emission Spectrometer

Posted by Betsey Seibel on Jul 20, 2016 3:05:55 PM

Leeman Labs is a pioneer in the ICP spectrometry industry, and we were the first to use an Echelle spectrometer for ICP-OES. Recently we added our new Prodigy Plus High Dispersion ICP Spectrometer to our family of ICP-OES instruments. The Prodigy Plus builds upon our legacy and experience, while incorporating new state-of-the-art technology.

 

Read More

Tags: ICP-OES

Department of Energy Wants New Research and Technology to Fight Mercury Contamination

Posted by Betsey Seibel on Jul 6, 2016 4:40:23 PM

The U.S. Department of Energy (DOE) has released a new plan to address the Environmental Management (EM) challenge of mercury contamination at two sites in Tennessee and South Carolina. The plan “advocates for research and the development of technologies that could resolve key technical uncertainties with mercury in environmental remediation, the deactivation and decommissioning of facilities, and processing waste in tanks.”

 

Read More

Tags: mercury analysis

Citrus Peels and Waste Sulfur Key to New Mercury Absorbing Polymer

Posted by Betsey Seibel on May 17, 2016 10:30:00 AM

Citrus_fruit.jpgA research team at Flinders University in Australia has “developed an inexpensive, non-toxic polymer that can absorb hazardous mercury compounds out of water and soil.” The secret ingredient of the polymer is a colorless liquid hydrocarbon that is extracted from the peel of citrus fruits such as lemons, limes and oranges. The process to extract limonene, which gives citrus fruits their smell, includes centrifugal separation and steam distillation.

 

According to a paper published in the journal Angewandte Chemie International Edition, limonene is combined with an equal mass of molten sulfur and synthesized to form a sulfur-limonene polysulfide compound. The two-phase mixture becomes a single, dark red phase upon reaction. The mixture turns a bright yellow in the presence of mercury.

 

Read More

Tags: mercury analysis

Mercury Levels in Precipitation Trending Up Across North America

Posted by Betsey Seibel on May 12, 2016 4:18:10 PM

Stack_with_Big_Plume.jpg

While mercury levels in rainfall and other forms of precipitation have fallen along the East Coast, other sites in the center of North America are reporting increased levels of the toxic element, pushing overall trends for the continent in a positive direction.

Read More

Tags: mercury analysis

What are CVAA Mercury Analyzers Systems?

Posted by Betsey Seibel on Mar 18, 2016 4:07:46 PM

In a previous blog post, we wrote about Cold Vapor Atomic Absorption Spectroscopy, a primary technique for mercury analysis. In this post, we will describe Teledyne Leeman Labs’ instruments that facilitate the process.

 

Leeman Labs offers two CVAA systems; the Hydra IIAA, an entry-level CVAA system that can detect mercury limits of less than 5.0 ng/L with a usable range of 5 ng/L to 1 mg/L; and the QuickTrace M-7600 CVAA Mercury Analysis System, which is a dual beam system capable of ultra-trace detection limits of less than 0.5 ng/L.

 

Read More

Tags: CVAA

Scientist Complete 7th Row of Periodic Table

Posted by Betsey Seibel on Jan 26, 2016 1:07:35 PM

Scientists from Japan, Russia and America recently made all science textbooks obsolete when the four new elements they discovered were officially added to the periodic table, completing the 7th period of the table of elements. The first elements added to the table since 2011 were verified by the U.S.-based International Union of Pure and Applied Chemistry (IUPAC), the global organization responsible for governing chemical nomenclature, terminology and measurement.

 

Read More

Tags: Periodic Table

Getting to Know Leeman Labs CVAFS and Direct Analysis Combustion Mercury Analyzer

Posted by Betsey Seibel on Jan 18, 2016 11:30:00 AM

Teledyne Leeman Labs offers a family of fully automated mercury analyzers that address the analysis of solids, semi-solids and liquids. Our high performance instruments help lab technicians, chemists and lab managers to complete the myriad of task required in today’s modern laboratories.

 

We recently released a Practical Guide for Selecting the Best Technique for Mercury Measurement where we describe in detail each of our mercury analyzers and how they work. In a previous post, we covered our two CVAAS systems. Below is a summary of the information included in the guide about Leeman Lab’s Cold Vapor Atomic Fluorescence Spectroscopy and Direct Analysis Combustion systems. The complete guide can be downloaded at TeledyneLeemanLabs.com.

Read More

Tags: CVAF, Combustion