Brian P. Jackson

Jackson_smallBrian P Jackson graduated from Oxford University,UK, with a BSc in Chemistry in 1989 and from the University of Georgia, USA, in 1998 with a PHD in Soil Chemistry.  Brian came to Dartmouth in 2005 to become  Director of the Trace Element Analysis Core at Dartmouth and  is currently  also Research Associate Professor in Earth Sciences.

 Brian has a long-standing interest in analytical methods to understand the speciation and size fractionation of trace elements in environmental and biological systems.  Brian began his research career in 1995 studying the availability and speciation of arsenic and selenium from coal fly ash and then fly ash mixtures with sewage sludge and poultry litter. Surprisingly, poultry manure itself had the highest available arsenic of these waste products and this turned out to be because poultry are fed an organo-arsenic compound, Roxarsone.  Brian was one of the first researchers to study these organo-arsenic feed additives and 15 yrs later, and after studies by many other groups and public pressure,  the US FDA has banned all four arsenic drugs from poultry production.

When Brian arrived at Dartmouth in 2005 he also began to work on mercury.  His group developed species specific isotope dilution methods for low level mercury speciation analysis, and extraction/digestion method for low sample mass samples that allows both mercury speciation and total trace metal analysis of the same extract.   His group has also used enriched species specific mercury tracers to understand mercury species cycling and availability in estuarine systems.

Dartmouth also has an active research focus on arsenic and Brian has worked with colleagues to study sources of arsenic exposure and human biomarkers.  In 2012 the group had national media attention for their papers on arsenic in products containing brown rice syrup and increased urinary arsenic in pregnant women as a result of rice consumption.

Throughout his research career Brian has exploited the versatility and sensitivity of ICP-MS as a tool to understand trace element speciation.