Navigation Links
Nitrous gases and zinc in the crosshairs
Date:7/28/2009

The Senate Commission for the Investigation of Health Hazards of Chemical Compounds in the Work Area established by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) has issued the MAK and BAT Values List for 2009. This year's list contains 62 changes and new entries.

These include revised assessments of nitrogen monoxide and nitrogen dioxide. These gases are produced during combustion processes and thus occur in automobile emissions. Amongst other things, they cause acid rain. Oxides of nitrogen are used in the industrial production of nitrites. Purest nitrogen monoxide has many uses in medicine, including treating newborn babies with respiratory failure and as a test gas in calibrating measuring devices. The trace element zinc, which we ingest through our food, is a component of important enzymes. If inhaled, however, it can have toxic effects on the lungs, including a condition known as zinc fume fever. The element and its inorganic compounds formed the focus of the Commission's investigations, with new MAK values being defined for these substances. The results of the re-examination showed that the maximum concentration of zinc oxide fumes in the breathing air supply to which workers can be exposed without suffering adverse health effects is considerably lower than was previously stated.

As every year, the list was presented to the Federal Minister for Labour and Social Affairs at the beginning of July. After thorough scientific testing, it will be used to make recommendations on occupational health. In addition to the MAK values, the list also shows the concentration of a substance in the body to which a person can be exposed during his or her working life without suffering any adverse health effects (BAT values). The Biological Guide Values and Biological Substance Reference Values (BLW or BAR values) are also included. Furthermore, the scientists and academics of the DFG Commission also investigated whether or not a particular substance causes cancer, has a mutagenic effect on gametes or poses a risk to unborn children during pregnancy. Analyses of the substances' sensitising and skin resorption effects were also performed.

In the carcinogenic substances category there are, this year, a total of seven revisions or alterations. These include the categorisation of the chromates (except lead and barium chromate) as carcinogenic in humans. According to the new MAK and BAT Values List, chromium (VI) compounds damage gametes and cause skin sensitivity. They received an "H" warning, which means that absorption via the skin can significantly contribute to the substance's toxicity. The Commission also checked 13 substances for pregnancy risks. These include di-n-butyl phthalate from the phthalates group, phenyltin compounds, phosphine, propionic acid, zinc and its inorganic compounds with which, if the MAK value is adhered to, there is no risk of foetal damage. There were a total of 13 changes and additions to the "BAT Value, BLW, BAR and EKA" section of the list.

In 2009, the Commission also published additional Biological Substance Reference Values (BAR values), which were first published in 2008. These values are not limits; instead, they define the "background exposure level" of a substance in the body. The BAR values permit comparisons between the level of exposure experienced by the general population and the exposure measured in the workplace. BAR values were determined for the following substances: acrylonitrile, soluble barium compounds, beryllium and its inorganic compounds and nickel and its compounds, plus o-toluidine and vinyl chloride.

As every year, once the current list has been submitted to the Federal Minister for Labour and Social Affairs, it is subject to a comments deadline. During this period, detailed written explanatory statements on every substance evaluated are requested from the Commission's Scientific Office by the end of the year and new information and remarks can be added. These are also verified and, if necessary, taken into consideration. Only once this has been done will the Senate Commission conclusively adopt the proposed values and their justifications as the basis for legislation on health and safety in the workplace.


'/>"/>

Contact: Cornelia Pretzer
Cornelia.Pretzer@dfg.de
49-228-885-4320
Deutsche Forschungsgemeinschaft
Source:Eurekalert

Related medicine news :

1. Air Products Appoints John Marsland VP and GM of Global Liquid Bulk, Generated Gases, and Helium
2. Valley National Gases, LLC Acquires Beaver Valley Welding Supply, Inc: Sixth Acquisition for Valley National Gases This Fiscal Year
3. RxElite Awarded Anesthetic Gases Multi-Source Contract by Premier Inc., a Purchasing Network for More than 1,500 U.S. Hospitals and 49,000 Other Healthcare Sites
4. New Gas Analyzer Measures Two Gases at Once!
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/24/2016)... , ... June 24, 2016 , ... Marcy was in a crisis. Her son James, ... out at his family verbally and physically. , “When something upset him, he couldn’t control ... use it. He would throw rocks at my other children and say he was going ...
(Date:6/24/2016)... ... 2016 , ... Topical BioMedics, Inc, makers of Topricin and MyPainAway Pain Relief Products, join The ... raise to $12 an hour by 2020 and then adjusting it yearly to increase at ... the minimum wage, assure the wage floor does not erode again, and make future increases ...
(Date:6/24/2016)... ... June 24, 2016 , ... Strategic ... Frederick area economy by obtaining investment capital for emerging technology companies. SCP ... that have already resulted in more than a million dollars of capital investment ...
(Date:6/24/2016)... ... ... Finally, a bruise cream that really works. Originally designed to reduce ... post-surgical treatment plans of a variety of other procedures including, but not limited to, ... bruising and causes a rapid resolution of bruising and inflammatory changes compared to no ...
(Date:6/24/2016)... , ... June 24, 2016 , ... Dr. Seema Daulat, ... Evans Dermatology in the South Lamar location as of July 13, 2016. , Dr. ... School. As a medical student, she regularly volunteered at the Agape Clinic serving Dallas’ ...
Breaking Medicine News(10 mins):
(Date:6/24/2016)... , June 24, 2016 The Academy of ... recommendations that would allow biopharmaceutical companies to ... entities that make formulary and coverage decisions, a move ... of new medicines. The recommendations address restrictions ... appear on the drug label, a prohibition that hinders ...
(Date:6/24/2016)... India , June 24, 2016 ... Needles Market by Type (Standard Pen Needles, Safety Pen ... Therapy (Insulin, GLP-1, Growth Hormone), Mode of Purchase (Retail, ... by MarketsandMarkets, This report studies the market for the ... expected to reach USD 2.81 Billion by 2021 from ...
(Date:6/23/2016)... , June 23, 2016  MedSource announced ... as its e-clinical software solution of choice.  This ... best possible value to their clients by offering ... The preferred relationship establishes nowEDC as the EDC ... for MedSource,s full-service clients.  "nowEDC has long been ...
Breaking Medicine Technology: