2. Normative reference The standards cited at the appropriate places in this standard are as follows. For these reference standards, their latest version (including the Supplements) shall be applied. JIS K 0124 General rules for high performance liquid chromatography JIS K 2249 Crude petroleum and petroleum products Determination of density and petroleum measurement tables based on a reference ...

The relation between occupational factors and pancreatic cancer has been studied by two different approaches: a population based case-control study with two series of controls and a retrospective cohort study based on register data. With both approaches, some support was found for an association with occupational exposure to petroleum products. Associations were also indicated with exposure to ...

Liquid ultrasonic flow meters (LUFMs) continue to gain popularity in petroleum measurement with the promise of high accuracy and low maintenance. These are favorable features, but because of the high volume and value of petroleum products, buyers and sellers must have a high level of confidence in the accuracy of measurement. This assurance in custody transfer measurement is gained by adherence...

The studies focused on the effect of the addition of low concentrations of glucose - a substrate that is readily subject to microbiological degradation, on the rate of biodegradation of petroleum products. Glucose in concentration 1% was introduced into mineral medium containing 3% crude oil, with or without bacterial inoculum. The rate of degradation of crude oil in the individual cultures was...

Rockets and Feathers? Petroleum Product Price Movements “Shooting up like a rocket, drifting downward like a feather in the wind,” or so goes the perception of petroleum product prices. This became the focus of public attention world over in 2008, when the international price of oil surged in the first six months, only to fall dramatically to a third of its peak value in the following five mont...

HE question of the origin of petroleum has long been debated. In the history of this question, the fact of the optical activity of petroleum has occupied an important place. It was pointed out ( 1 , 2 ) by Walden that "inorganic" hypotheses for explaining the origin of petroleum did not account for its optical activity. Because of the increasing certainty that all petroleums possessed optical a...

The simple and easy performed automated method for the IR determination of petroleum products (PP) in water using extraction-chromatographic cartridges has been developed. The method assumes two stages: on-site extraction of PP during a sampling by using extraction-chromatographic cartridges and subsequent determination of the extracted PP using sequential injection analysis (SIA) with IR detec...

The biodegradation of hydrocarbon pollutants in open systems is limited by the availability of a utilizable nitrogen source. This limitation can be overcome by using uric acid. Enrichment cultures grown on crude oil-uric acid media yielded mixed and pure cultures that degraded petroleum. In a simulated open system, uric acid bound to crude oil and was available for bacterial growth and petroleu...

The efficiency of Bacillus subtilis DM-04 and Pseudomonas aeruginosa M and NM strains isolated from a petroleum contaminated soil sample from North-East India was compared for the biodegradation of crude petroleum-oil hydrocarbons in soil and shake flask study. These bacterial strains could utilize crude petroleum-oil hydrocarbons as sole source of carbon and energy. Bioaugmentation of TPH cont...