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Effective sample preparation is crucial for accurate and reliable laboratory analysis. During this process, two significant sources of error can arise: concentration bias from improper sample splitting and contamination caused by methods used to reduce particle size, such as grinding or homogenization. Identifying and minimizing these potential errors is crucial to ensuring the validity of the analysis.
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Persistent Distress after Water Contamination.

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    Psychological distress persisted in Charleston residents after a 2014 chemical spill. Factors like female sex and poor communication increased distress, impacting water supply trust.

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    Area of Science:

    • Environmental Health
    • Public Health
    • Psychology

    Background:

    • A chemical spill in Charleston, West Virginia, contaminated the public water supply for over a week in January 2014.
    • Psychological distress is a known outcome following disaster events.

    Purpose of the Study:

    • To assess psychological distress during and three months after the chemical spill incident.
    • To identify predictors of persistent distress, including stressors, communication adequacy, and water supply perceptions.

    Main Methods:

    • A survey was conducted on the exposed population.
    • Data collected included psychological distress symptoms, stressors, communication perceptions, and water supply usage and safety perceptions.

    Main Results:

    • Twenty-six percent of respondents experienced persistent psychological distress.
    • Female sex, negative household experiences (e.g., illness), and poor communication perception were associated with increased odds of persistent distress.
    • Households without persistent distress were more likely to report drinking tap water compared to those with persistent distress.

    Conclusions:

    • Psychological distress among Charleston residents persisted post-incident.
    • Mistrust of the public water supply may continue due to the incident and its aftermath.