Purgeable volatiles

Results of the PMV on VOC/SVOC analysis from different newspapers according to RAL-UZ 14 annex 4 show that worldwide different ink binders and solvents are used. This is documented in Table 3 by the amount and composition of the purgeable volatile substances from the newspapers. Especially in Asia, increased amounts of... 

Brief descriptions of each of the test methods are presented in the following sections. The complete methods are available on request from EMSL-Cincinnati. Sample collection procedures for purgeable volatile analytes are unique and are described in the individual methods. Sample collection procedures for analytes other than the purgeable volatiles can be found in reference 7. 

Broad Spectrum Methods (Methods 624 and 625). Two broad-spectrum GC-MS methods, Method 624 for purgeable volatile organics and Method 625 for semi volatile organics, were included in the development and evaluation studies. They were the successors of the Sampling and Analysis Procedures for Survey of Industrial Effluents for Priority Pollutants (5). 

Method 624 for Purgeable Volatiles. This method, similar to Methods 601 and 602, simultaneously determines the chlorinated aliphatic and aromatic purgeable priority pollutants. The sorbent trap employed here consists of 1 cm of 3% OV-1 coated solid support, 15 cm of Tenax-GC, and 8 cm of silica gel. The GC column is 6-ft X 0.1-in. i.d. packed with 1% SP-1000 Carbopack B (60-80 mesh) operated under the following oven temperature conditions initial temperature of 45 °C for 3 min, then programmed at 8 °C/min to 220 °C. 

In the interim between the initial development and application of Methods 624 and 625, the Effluent Guidelines Division, under contract, developed isotopic dilution methods for purgeable volatiles and semivolatile priority pollutants (11). The primary difference between Methods 624 and 625 and their 1624 and 1625 counterparts is that stable, isotopically labeled analogs of the compounds of interest are added to the sample prior to extraction, and quantitative determination is made by using the isotope ratio values for the compounds determined relative to their labeled analogs. In addition, Method 1625 is designed as a capillary column method and uses a 30-m X 0.25-mm silicone-bonded-phase fused silica column (J W DB-5). Method 1624 uses the same column materials as Method 624. Methods 1624 and 1625 are presented as acceptable alternatives to Methods 624 and 625. 

In addition to the THM methods, EMSL-Cincinnati has developed purge and trap methods for selected halogenated (29) and aromatic (30) compounds that are considered to be chemical indicators of industrial contamination. The methods are applicable to 47 halogenated compounds (Method 502) and 33 compounds that have ionization potentials less than 10.2 eV and that are aromatic or contain a doubly bonded carbon (Method 503). Seven of these compounds are halogenated and are also included in the method for halogenated compounds. Another method, Method 524 (31), provides for GC-MS determination of 28 purgeable volatiles. Single laboratory precision and accuracy data for these compounds are provided in the EMSL methods. 

Purgeable Volatile Halogenated Hydrocarbons and Their Characteristic Masses... 

Bellar, A.T. and Lichtenberg, J.J. Semi-automated head-space analysis of drinking waters and industrial waters for purgeable volatile organic compounds. Proceedings of Symposium on... 

To satisfy the Resource Conservation and Recovery Act (1977) and its amendment for hazardous and solid waste (1984), the 80(K) Series Methods have been designed to analyze solid waste, soUs, and groundwater. In particular, methods 8240/8260 require the use of a purge-and-trap device in conjunction with packed or capillary GC/MS, respectively, for the analysis of purgeable organic compounds. Methods 8250/8270 concern analyses for the less-volatile bases, neutrals, and acids by GC/MS after extraction from the matrix by an organic solvent. 

GC/MS method for analysis of pollutants in hazardous wastes Volatile (purgeable) semi-volatile (solvent extractable insecticide/PCB (residue) fractions in soil, water and sediments (126 compounds mentioned) 33... 

Peoples AJ, Pfaffenberger CD, Shafik TM, et al. 1979. Determination of volatile purgeable halogenated hydrocarbons in human adipose tissue and blood serum. Bull Environ Contam Toxicol 23 244-249. 

Barber LB, Thurman EM, Takahashi Y, et al. 1992. Comparison of purge and trap GC/MS and purgeable organic chloride analysis for monitoring volatile chlorinated hydrocarbons. Ground Water 30 836-842. 

All fuel methods analyze GRO with a purge and trap sample introduction technique, whereas semi volatile diesel fuel and heavy, non-volatile motor oil (DRO and RRO) are first extracted from soil or water samples, and the extracts are injected into the analytical instrument. This distinction in sample preparation gave rise to the terms of total purgeable petroleum hydrocarbons (TPPH) or total volatile petroleum hydrocarbons (TVPH) and total extractable petroleum hydrocarbons (TEPH). A group of petroleum fuels with the carbon range of C7 to Cig may be analyzed with either technique. Common petroleum fuels and other petroleum products fall into these three categories as shown in Table 2.3. 

Volatile compounds Compounds amenable to analysis by purge and trap. Synonymous with purgeable compounds. 

Shafik, T. M., and Enos, H. F., Determination of Volatile Purgeable Halogenated Hydrocarbons in Human Adipose Tissue and Blood Serum Bull. Environ. Contam. Toxicol. 23 (1-2) 244-249 (1979) CA 81 ... 

Purgeable organic carbon POC Referred to as VOC (volatile organic carbon) the fraction of TOC removed from an aqueous solution by gas sparging under specified conditions... 

Volatile chlorocompounds 624 purgeable organic compounds eg vinyl chloride, chloro naphthalene, anthracene 2.2 l>B,4-(2-hydroxy ethoxy)-3,5, dibromo-phenyl propane Aliphatic amines... 

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