Wilhelm S Mark, Liang Lian, Cussen Deborah, Kirchgessner David A
Mercury Technology Services, 23014 Lutheran Church Rd., Tomball, Texas, USA.
Environ Sci Technol. 2007 Jul 1;41(13):4509-14. doi: 10.1021/es062742j.
The mean and range of concentrations of mercury in crude oil processed by U.S. refineries in 2004 were determined using two analytical methods. One hundred seventy separate crude oil streams were sampled repetitively to obtain 328 individual samples. Samples were retrieved immediately upstream of refinery tank farms. Losses of mercury during production, separation, and transportation were not examined. The arithmetic mean and median of 170 oil streams were 7.3 and 1.5 microg/kg in total mercury, respectively. The total mercury concentration of oil processed in the United States in year 2004, including all species and both dissolved and suspended forms, expressed as a volume-weighted mean was calculated to be 3.5 +/- 0.6 microg/kg. The range of measured concentrations extended from below the analytical detection limit (0.5 microg/kg) to approximately 600 microg/kg. Good agreement was found with other recent and independent studies of mercury in crude oil refined in North America. The total amount of mercury in crude oil processed in the U.S annually is less than five percent of the amount contained in U.S. coal produced annually.
2004年，美国炼油厂加工的原油中的汞浓度均值及范围通过两种分析方法确定。对170个不同的原油流进行了重复采样，以获取328个单独样本。样本在炼油厂油罐区的上游立即采集。未对生产、分离和运输过程中的汞损失进行检测。170个油流的算术平均值和中位数分别为总汞7.3微克/千克和1.5微克/千克。2004年美国加工的原油中的总汞浓度，包括所有形态以及溶解态和悬浮态，以体积加权平均值计算为3.5±0.6微克/千克。测量浓度范围从低于分析检测限（0.5微克/千克）到约600微克/千克。与北美近期其他独立的原油汞研究结果吻合良好。美国每年加工的原油中的汞总量不到美国每年生产煤炭中所含汞量的5%。
