Calibration technique for counting krypton-85 in charcoal traps

Seifert, Dirk; Stuart, R L

doi:10.1021/ac60269a015

Anal. Chem.

1968

DOI: 10.1021/ac60269a015

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Calibration technique for counting krypton-85 in charcoal traps

Dirk Seifert¹,

R L Stuart²

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2004

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Study on Distribution and Composition of Carboxylic Acids of Bohai Crude Oil in China

Fei

Wang

et al. 2004

Petroleum Science and Technology

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This study concerns with distribution, type, and structure of carboxylic acids in the 200-550 C distillates of Bohai crude oil. The acids, isolated by aqueous alcoholic sodium hydroxide, were converted into corresponding methyl esters with BF 3 as catalyst. The chemical structure of these carboxylic acids and distribution of their various components in different distillates were studied in detail by IR, VPO, MS, and elemental analysis. The results show that the carboxylic acids in Bohai crude oil are mainly composed of naphthenic acids and branched chain fatty acids, and the content ORDER REPRINTS is high in distillates at about 405 C and 505 C. With increase of boiling temperature of distillates, the content of naphthenic acids increases gradually. The ring numbers of naphthenic acids in diesel distillate are mainly 1-3, and those in lubricant distillate are mainly 1-6.

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Study on Distribution and Composition of Carboxylic Acids of Bohai Crude Oil in China

Fei

Wang

et al. 2004

Petroleum Science and Technology

View full text Add to dashboard Cite

show abstract

Study on Distribution and Composition of Carboxylic Acids of Bohai Crude Oil in China

Fei

Wang

et al. 2004

Petroleum Science and Technology

View full text Add to dashboard Cite

This study concerns the distribution, type, and structure of carboxylic acids in the 200-550 C distillates of Bohai crude oil. The acids, isolated by aqueous alcoholic sodium hydroxide, were converted into corresponding methyl esters with BF 3 as a catalyst. The chemical structure of these carboxylic acids and distribution of their various components in different distillates were studied in detail by IR, VPO, MS, and elemental analysis. The results show that the carboxylic ORDER REPRINTS acids in Bohai crude oil are mainly composed of naphthenic acids and branched chain fatty acids, and the content is high in distillates at about 405 and 505 C. With the increase of boiling temperatures of distillates, the content of naphthenic acids increases gradually. The ring numbers of naphthenic acids in diesel distillate are mainly 1-3, and those in lubricant distillate are mainly 1-6.

show abstract

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Calibration technique for counting krypton-85 in charcoal traps

Cited by 2 publications

References 1 publication

Study on Distribution and Composition of Carboxylic Acids of Bohai Crude Oil in China

Study on Distribution and Composition of Carboxylic Acids of Bohai Crude Oil in China

Study on Distribution and Composition of Carboxylic Acids of Bohai Crude Oil in China

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