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UOP 992-11
Trace Arsenic in Liquid Organics and Heavy Petroleum Fractions by ICP-MS
STANDARD published on 29.9.2011
The information about the standard:
Designation standards: UOP 992-11
Publication date standards: 29.9.2011
SKU: NS-575054
The number of pages: 8
Approximate weight : 24 g (0.05 lbs)
Country: American technical standard
Category: Technical standards UOP
Preview of the standard UOP 992-11
| 1. Scope |
|
This method is for determining total trace arsenic in liquid organics and heavy petroleum fractions by microwave digestion and Inductively Coupled Plasma - Mass Spectrometry (ICP-MS). The lower limit of quantitation for arsenic is 5 ng/g (mass-ppb). Sample preparation by conventional extraction and digestion, such as that used in UOP Method 946, Arsenic in Petroleum Naphthas by HG-AAS, is time consuming and is problematic for high-boiling samples as it is possible for arsenic to be volatilized at the extreme sample preparation conditions required. UOP Method 986, Arsenic in Heavy Petroleum Fractions using Microwave Digestion and Graphite Furnace-AAS, uses microwave digestion, however due to sensitivity limitations of the GF-AAS, multiple digestions must be combined for analysis. A comparison of the methods is shown in Table 1 |
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