SEGH Articles

Malcolm Brown: at the heart of SEGH

03 July 2016
It was with great sadness that we heard of the passing of Malcolm Brown in April after a long battle with illness. Malcolm worked at the heart of SEGH as the Secretary of the society

 
 
It was with great sadness that we heard of the passing of Malcolm Brown in April after a long battle with illness.  Malcolm was involved with SEGH for the past 30 years and in particular worked at the heart of SEGH as the Secretary of the society for many years, initially in the European Section and latterly as Secretary to the International Committee.  In this role, he was instrumental in maintaining momentum between annual board meetings and conferences in order to take forward key decision making in the development 

of SEGH.  More recently, over the last 12-18 months, Malcolm was instrumental in applying to the UK Charities commission and, although unsuccessful, the experience contributed to his leadership in rewriting the SEGH constitution to ensure its relevance for today and the future.

Malcolm drew on his more than 30 years’ experience at the British Geological Survey (BGS) as a geologist mapping the UK and worked in the early days in the Geochemical Baseline Survey. For a number of years leading up to his retirement, Malcolm headed up the Business Development unit at BGS, working with a variety of academic, regulatory, government, industry and other societies to encourage their use of geoscientific data.  His scientific interests extended beyond “simple “ geology and  geochemistry through to linking environmental geochemistry to health issues, bringing to bear his skills in networking and promoting cross-disciplinary work, which is at the very heart of what SEGH is trying to accomplish.

Malcolm and his wife Anthea have together been at the heart of SEGH for many years, with Anthea acting as membership secretary.  They have both unselfishly, even after retirement, contributed significantly to SEGH through their tireless efforts in the organisation of administration and management activities, as well as support to the European conferences.  Their constant presence has provided continuity through a ‘corporate memory’, quietly steering SEGH through the regular changes of Presidents and Regional Chairs, riding out the sometimes strong differences of opinion and viewpoints with utmost diplomacy, making significant contributions to the defusing of tensions and the production of satisfying outcomes.  Malcolm has been described by many on the SEGH board as a true gentleman, fair, determined and dependable, keen to help others and enthusiastic in bringing people together from different science disciplines and interests, in particular encouraging ‘young blood’ to participate in the organisation of SEGH.


On behalf of the SEGH board, we express our condolences to Anthea and her family, but also our thanks for Malcolm’s contribution to the survival of SEGH over many years in what has been a competitive environment for similar Societies, but also in setting SEGH on a path of modernisation.

Michael Watts, Andrew Hursthouse and Alex Stewart

 
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Latest on-line papers from the SEGH journal: Environmental Geochemistry and Health

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    Abstract

    Aquifer storage and recovery (ASR) and aquifer recharge (AR) provide technical solutions to address water supply deficits and growing future water demands. Unfortunately, the mobilization of naturally present arsenic due to ASR/AR operations has undermined its application on a larger scale. Predicting arsenic mobility in the subsurface during ASR/AR is further complicated by site-specific factors, including the arsenic mobilization mechanisms, groundwater flow conditions, and multi-phase geochemical interactions. In order to ensure safe and sustainable ASR/AR operation, a better understanding of these factors is needed. The current study thus aims to better characterize and model arsenic remobilization at ASR/AR sites by compiling and analyzing available kinetic data on arsenic mobilization from arsenopyrite under different aqueous conditions. More robust and widely applicable rate laws are developed for geochemical conditions relevant to ASR/AR. Sensitivity analysis of these new rate laws gives further insight into the controlling geochemical factors for arsenic mobilization. When improved rate laws are incorporated as the inputs for reactive transport modeling, arsenic mobilization in ASR/AR operations can be predicted with an improved accuracy. The outcomes will be used to guide groundwater monitoring and specify ASR/AR operational parameters, including water pretreatment requirements prior to injection.

  • Heavy metal exposure has adverse effects on the growth and development of preschool children 2018-04-25

    Abstract

    The purpose of this study was to investigate the associations between levels of lead (Pb), cadmium (Cd), chromium (Cr), and manganese (Mn) in the PM2.5 and blood and physical growth, and development parameters including birth length and weight, height, weight, body mass index (BMI), head circumference, and chest circumference in preschool children from Guiyu (e-waste exposure area) and Haojiang (the reference area). A total of 470 preschool children from Guiyu and Haojiang located in southeast coast of China were recruited and required to undergo physical examination and blood tests during the study period. Birth length and weight were obtained by birth records and questionnaire. Pb and Cd in both PM2.5 and blood were significantly higher in Guiyu than Haojiang. Remarkably, the children of Guiyu had significantly lower birth weight and length, BMI, and chest circumference when compare to their peers from the reference area (all p value < 0.05). Spearman correlation analyses showed that blood Pb was negatively correlated with height (r = −0.130, p < 0.001), weight (r = −0.169, p < 0.001), BMI (r = −0.100, p < 0.05), head circumference (r = −0.095, p < 0.05), and chest circumference (r = −0.112, p < 0.05). After adjustment for the potential confounders in further linear regression analyses, blood Pb was negatively associated with height (β = −0.066, p < 0.05), weight (β = −0.119, p < 0.001), head circumference (β = −0.123, p < 0.01), and chest circumference (β = −0.104, p < 0.05), respectively. No significant association between blood Cd, Cr, or Mn was found with any of our developmental outcomes. Taken together, lead exposure limits or delays the growth and development of preschool children.

  • Contamination characteristics of trace metals in dust from different levels of roads of a heavily air-polluted city in north China 2018-04-24

    Abstract

    Concentrations of eight trace metals (TMs) in road dust (RD) (particles < 25 μm) from urban areas of Xinxiang, China, were determined by inductively coupled plasma mass spectrometry. The geometric mean concentrations of Zn, Mn, Pb, As, Cu, Cr, Ni and Cd were 489, 350, 114, 101, 60.0, 39.7, 31.6, and 5.1 mg kg−1, respectively. When compared with TM levels in background soil, the samples generally display elevated TM concentrations, except for Cr and Mn, and for Cd the enrichment value was 69.6. Spatial variations indicated TMs in RD from park path would have similar sources with main roads, collector streets and bypasses. Average daily exposure doses of the studied TMs were about three orders of magnitude higher for hand-to-mouth ingestion than dermal contact, and the exposure doses for children were 9.33 times higher than that for adults. The decreasing trend of calculated hazard indexes (HI) for the eight elements was As > Pb > Cr > Mn > Cd > Zn > Ni > Cu for both children and adults.