The risk assessment information system

Kerr, Sarah; Bonczek, R.R.; McGinn, C.W.; Land, Michael; Bloom, Linda; Sample, Bradley E.; Dolislager, Fredrick

doi:10.2172/663527

Cited by 14 publications

(4 citation statements)

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“…A total of 354 chemicals are in the database with their physical‐chemical properties. Organic carbon partition coefficients, solubility values, and soil water partition coefficients are obtained from RAIS (Kerr et al ). Vapor pressures, Henry's Law constants, and densities are gathered from the Pennsylvania Department of Environmental Protection (PDEP ).…”

Section: Methodsmentioning

confidence: 99%

A Fuzzy Rule Based Remedial Priority Ranking System for Contaminated Sites

Polat

Aksoy²,

Ünlü

2014

Groundwater

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Contaminated site remediation is generally difficult, time consuming, and expensive. As a result ranking may aid in efficient allocation of resources. In order to rank the priorities of contaminated sites, input parameters relevant to contaminant fate and transport, and exposure assessment should be as accurate as possible. Yet, in most cases these parameters are vague or not precise. Most of the current remediation priority ranking methodologies overlook the vagueness in parameter values or do not go beyond assigning a contaminated site to a risk class. The main objective of this study is to develop an alternative remedial priority ranking system (RPRS) for contaminated sites in which vagueness in parameter values is considered. RPRS aims to evaluate potential human health risks due to contamination using sufficiently comprehensive and readily available parameters in describing the fate and transport of contaminants in air, soil, and groundwater. Vagueness in parameter values is considered by means of fuzzy set theory. A fuzzy expert system is proposed for the evaluation of contaminated sites and a software (ConSiteRPRS) is developed in Microsoft Office Excel 2007 platform. Rankings are employed for hypothetical and real sites. Results show that RPRS is successful in distinguishing between the higher and lower risk cases.

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Section: Methodsmentioning

confidence: 99%

A Fuzzy Rule Based Remedial Priority Ranking System for Contaminated Sites

Polat

Aksoy²,

Ünlü

2014

Groundwater

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“…The Target Hazard Quotient (THQ) is the ratio of hazardous element exposure to the reference doses, which is the highest level at which no impact are observed after ingesting a dietary component. Cd (0.0005 ppm), Pb (0.0035 ppm), As (0.00008 ppm), and Hg (0.0001 ppm) are the specific reference doses (FIR) for each identified heavy metal (Kerr et al, 1998;U.S. EPA, 1997).…”

Section: Target Hazard Quotients (Thq)mentioning

confidence: 99%

Concentrations of Heavy Metals in Three Brown Seaweed (Phaeophyta: Phaeophyceae) Collected from Tourism Area in Sanur Beach, Coast of Denpasar, Bali and Public Health Risk Assessment

Rosiana¹,

Wiradana²,

Permatasari³

et al. 2022

JIPK

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Highlight Research Brown seaweed heavy metals content varies between species Risk assessment showed low health risk for heavy metal from intake of the three brown seaweed The three types of brown seaweed did not show carcinogenic properties to metal Arsenic (As) Abstract Marine brown seaweed are known as one of the potential biological agents to be developed as functional food and medicinal sectors. This study aims to examine the concentration of heavy metals (Pb, Cd, Hg, and As) in brown algae (Sargassum aquifolium, Padina australis, and Turbinaria ornata.) and the possible exposure to health risks caused by consumption. Heavy metal concentrations were determined using Atomic Absorption Spectroscopy (AAS) on brown seaweed samples obtained from three different sites. The average concentration of heavy metals in the dry weight of brown seaweed remains within the guidelines established by The Food and Drug Supervisory Agency (BPOM) Number 32 of 2019 concerning the Safety and Quality of Traditional Medicines, which is then used to calculate the estimated daily intake (EDI), target hazard quotient (THQ and TTHQ), and target cancer risk (TCR) for arsenic associated with food exposure to potentially toxic metallic elements. Each species of brown seaweed has a THQ and TTHQ level of <1, indicating that one or more toxic metal elements in the same meal provide no significant non-carcinogenic risk. The TCR for arsenic in these seaweeds are all less than 1 x 10-4, indicating no cancer risk. There are no chronic health hazards related with the ingestion of brown seaweed harvested from the coast of Sanur Beach at Denpasar, Bali.

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“…These non-degradable metals are toxic and have serious health risks. Copper, though essential to both plants and animals at low concentrations [2,3], causes anemia, kidney damage, stomach and intestinal distress, coma, and eventual death if the threshold limit is exceeded [4,5]. Continuous copper accumulation in the environment results from human activities, including industrialization, waste from copper mines, and poor waste management of copper-containing materials such as from electric wires, analytical reagents, and electroplating [6].…”

Section: Introductionmentioning

confidence: 99%

Comparison of Acid- and Base-Modified Biochar Derived from Douglas Fir for Removal of Copper (II) from Wastewater

Arwenyo,

Rodrigo,

Olabode

et al. 2024

Separations

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Copper is a non-biodegradable heavy metal, and high levels in water bodies cause serious environmental and health issues. Douglas fir biochar has a higher number of carboxylic, phenolic, and lactonic groups, which provide suitable active sites for copper removal. Douglas fir biochar (BC) was modified using 20% solutions of KOH (KOH/BC), H2SO4, (H2SO4/BC), and Na2CO3 (Na2CO3/BC). All materials were characterized using SEM, SEM-EDS, FTIR, TGA, XRD, BET, and elemental analysis. These modifications were done to compare the activations of those sites by measuring copper removal efficiencies. KOH/BC, H2SO4/BC, and Na2CO3/BC materials gave surface areas of 389.3, 326.7, and 367.9 m2 g−1, respectively, compared with pristine biochar with a surface area of 578.9 m2 g−1. The maximum Langmuir adsorption capacities for Na2CO3/BC, KOH/BC, BC, and H2SO4/BC were 24.79, 18.31, 17.38, and 9.17 mg g−1, respectively. All three modifications gave faster kinetics at 2 mg/L initial copper concentrations (pH 5) compared with pristine BC. The copper removal efficiency was demonstrated in four different spiked real water matrices. The copper removals of all four water matrices were above 90% at 2 mg/L initial concentration with a 2 g/L biochar dosage. The competitive effects of Pb2+, Zn2+, Cd2+, and Mg2+ were studied at equimolar concentrations of Cu2+ and competitive ions for all four materials.

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The risk assessment information system

Cited by 14 publications

References 0 publications

A Fuzzy Rule Based Remedial Priority Ranking System for Contaminated Sites

A Fuzzy Rule Based Remedial Priority Ranking System for Contaminated Sites

Concentrations of Heavy Metals in Three Brown Seaweed (Phaeophyta: Phaeophyceae) Collected from Tourism Area in Sanur Beach, Coast of Denpasar, Bali and Public Health Risk Assessment

Comparison of Acid- and Base-Modified Biochar Derived from Douglas Fir for Removal of Copper (II) from Wastewater

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