Rapid microprecipitation method for determining insolubles in asphalts,pitches and petroleum residua |
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| Affiliation: | 1. Educational Sciences Department, Recep Tayyip Erdogan University, Rize, Turkey;2. Primary Education Department, Kastamonu University, Kastamonu, Turkey;1. Institute of Pharmacy, Faculty I of Natural Sciences, Martin Luther University Halle-Wittenberg, 06120, Halle/Saale, Germany;2. Department of Pharmaceutical Technologies, Merck KGaA, 64293 Darmstadt, Germany |
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| Abstract: | A novel rapid microprecipitation method using an ultrasonic bath for determining n-heptane, toluene and trichloroethylene insolubles in asphalts, pitches and petroleum residua has been developed. The method is applicable to all solid and semi-solid petroleum residua (pitches) and asphalts containing little or no mineral matter. The procedure uses non-sophisticated equipment and only takes ≈ 30 min per determination. The method was applied to 10 pitches and asphalt samples. Results are compared with those obtained from the standard ASTM procedures. Repeatability of the method is also presented with ASTM D 2042-76. |
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