Analyze

Studie provides visual representations of lead concentration in Santa Ana cross matching it with vulnerability risk.

“Also of note when interpreting our results is that this study did not take into consideration the ingestion of heavy metals through the dietary route. Had we considered this additional exposure pathway, our calculated chronic daily intake levels of heavy metals would have been greater, resulting in higher estimated risk (particularly for metals such as Pb, As, and Cd which have been widely documented in various foods)” (Marsi et al. 2021)

“Both cancer and non-cancer risk at the Census tract level exhibited positive correlations with indicators of social as well as physiological vulnerability” (Marsi et al. 2021)

Exposure to heavy metals has been associated with adverse health effects and disproportionately impacts communities of a lower socio-economic status.  

This study used a community-based participatory research approach to collect and analyze a large number of randomly sampled soil measurements to yield a high spatially resolved understanding of the distribution of heavy metals in the Santa Ana soil, in an effort to exposure misclassification. This study looks into average metal  concentrations at the Census tract level and by land use type, which helps map potential sources of heavy metals in the soil and better understand the association between socioeconomic status and soil contamination (Marsi et al. 2021). 

In 2018, soil samples of eight heavy metals including lead (Pb), arsenic (As), manganese (Mn), chromium (Cr), nickel (Ni), copper (Cu), cadmium (Cd), and zinc (Zn) were collected across Santa Ana. These were analyzed at a high resolution using XRF analysis. Then, metal concentrations were mapped out and American Community Survey data was used to assess the metals throughout Census tracts in terms of social and economic variables. Risk assessment was conducted to evaluate carcinogenic risk. The results of the concentrations of soil metals were categorized according to land-use type and socioeconomic factors. “Census tracts where the median household income was under $50 000 had 90%, 92.9%, 56.6%, and 54.3% higher Pb, Zn, Cd, and As concentrations compared to high-income counterparts” (Marsi et al. 2021). All Census tracts in Santa were above hazard inder >1, which implies non-carcinogenic effects, and almost all Census tracts showed a cancer risk above 104, which implies greater than acceptable risk. Risk was found to be driven by childhood exposure.

It was concluded that the issue of elevated soil contamination relates back to environmental justice due to overlap between contaminated areas and neighborhoods of lower socioeconomic status. Marsi et al. (2021) found there needs to be more community-driven recommendations for policies and other actions to address disproportionate solid contamination and prevent adverse health outcomes.      

Published in May 2021, amid the coronavirus pandemic where in-person community workshops and meetings turned into weekly virtual meetings. 

-> Authors:

Shahir Masri: Department of Environmental and Occupational Health, Program in Public Health, University of California, Irvine; air pollution scientist.

Alana M. W. LeBrón: Department of Health, Society, and Behavior, University of California, Irvine; Assistant Professor, Chicano/Latino Studies; Interests: structural racism and health, health of Latina/o communities, community-based participatory research.

Michael D. Logue: Department of Chicano/Latino Studies, University of California, Irvine

Enrique Valencia: Orange County Environmental Justice, Santa Ana

Abel Ruiz: Jóvenes Cultivando Cambios, Santa Ana; CRECE Urban Farming Cooperative member

Abigail Reyes: Community Resilience, University of California, Irvine

Jun Wu: Department of Environmental and Occupational Health, Program in Public Health, University of California, Irvine

The publisher is Institut de hautes études internationales et du développement. The article is initial contribution by Jean-Marc Biquet and refer to Andrea Binder.

NGO report, and Revues.org which is a platform for journals in the humanities and social sciences run by the CLEO.

The report collect the data after the Haiti's earthquake and epidemic, most reference data is between the 2011 to 2013. It is found many people in Haiti is still live in tents or under tarpaulins. The problem of emergency or reconsttuctions is come out. 

It descripts the situation and problems when face the cholera epidemic. The serious problem of lacking water, hygiene and sanitation forced MSF have to take charging. The United Nations cluster system is not flexible to respond in a constantly changing environment and emergency relief. In addtion, the report shows the failure of the international promises is not match the expectation of Haitian people. It addressd to the success or failure of Humanitarian discourse is influenced by an important point which is management. The capacity deliver and the intergrity mangament can promoting the system and made a success humanitarian operation.

The report applied some other goverment research reports, organisation's research article, interview and telephone interview. It can shows the problem of the organisation or system after the disaster. Processing analysation and summary, it can help the organisation or system to promote and develop. The inadequate reponse for Haiti's disasters shows faliure of the aid system. However, the report shows the entire system cannot be condemn by a single case, and also there are two disasters happened in Haiti. The example of similar situation of facing the tsunami in Sri Lanka before the cluster system is built, in contrast, the cluster approach is more flexible as an informal selection mechanism during the Haiti earthquake response. The report have technical professionals to offer more reliable and more reference value.