An analytical procedure was developed for the determination of the toxic gas, nickel-carbonyl (13463393), which is used in the Mond process for the production of nickel and in the synthesis of methyl- acrylate and ethyl-acrylate monomers. A test atmosphere was generated by the injection of several microliters of nickel-carbonyl liquid into 10 percent carbon-monoxide and 90 percent nitrogen and pressurizing to 40 pounds per square inch gauge (psig); carbon- monoxide stabilized the nickel-carbonyl. The pressure vessel contained 6 parts per million of nickel-carbonyl and served as a reservoir from which the desired atmospheres were produced by combining samples with humidified air and 10 percent carbon-monoxide in nitrogen. The nickel-carbonyl concentration in the test atmosphere was determined by atomic absorption spectrophotometry after sampling in midget impingers containing 5 percent iodine in isopropanol. The new sampling method used a Calgon coconut based charcoal sorbent which was washed in nitric-acid before use. After sample adsorption, the sorbent was eluted with 3 percent nitric-acid in an ultrasonic water bath and aliquots analyzed by graphite furnace atomic absorption spectrophotometry. The desorption efficiency was 0.934 for nickel-nitrate at the concentration range carbonyl in air ranged between 90.8 and 95.0 percent. The author concludes that the sensitivity of the method makes it possible to determine nickel-carbonyl concentrations of 2 to 50 micrograms per cubic meter of air corresponding to 0.4 to 7 parts per billion in a 20 liter sample.
We take your privacy seriously. You can review and change the way we collect information below.
These cookies allow us to count visits and traffic sources so we can measure and improve the performance of our site. They help us to know which pages are the most and least popular and see how visitors move around the site. All information these cookies collect is aggregated and therefore anonymous. If you do not allow these cookies we will not know when you have visited our site, and will not be able to monitor its performance.
Cookies used to make website functionality more relevant to you. These cookies perform functions like remembering presentation options or choices and, in some cases, delivery of web content that based on self-identified area of interests.
Cookies used to track the effectiveness of CDC public health campaigns through clickthrough data.
Cookies used to enable you to share pages and content that you find interesting on CDC.gov through third party social networking and other websites. These cookies may also be used for advertising purposes by these third parties.