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Metallic trace element (MTE) Cr, Mn, Fe, Co, Cu, Zn, As, Cd, Hg, Pb

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This Metallic trace element (MTE) mind map template provides a comprehensive framework for analyzing Cr, Mn, Fe, Co, Cu, Zn, As, Cd, Hg, Pb in marine sediments, based on a study of Quiberon Bay and the Gulf of Morbihan with over 400 samples collected in 2009-2010. The template covers methodology (Orange Peel grab sampling, Teflon bomb digestion, ICP-MS), ecological risk assessment using ERL/TEL and ERM/PEL guidelines, sediment quality assessment via direct comparison and normalization indices (EF, Igeo, PLI), source identification (natural vs anthropogenic), and factors controlling MTE levels. Key nodes include 'm-ERM-Q < 0.5' indicating <21% probability of toxicity, and 'Igeo<0' for unpolluted sediment. This Metallic trace element cheat sheet is ideal for environmental scientists and marine ecologists.

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When to use this template

Environmental scientists and marine ecologists

Assessing heavy metal contamination in coastal sediment samples from a new field study.

Environmental consultants and regulatory agencies

Preparing a report on ecological risk of trace elements for regulatory compliance.

Professors and graduate students in environmental science

Teaching a university course on sediment quality assessment and pollution indices.

How to use this template

Step 1

Open and Explore the Core Methodology

Open the .xmind file to review the pre-structured branches covering sampling methods, ecological risk assessments, and sediment quality indices.

Step 2

Input Local Study Data and Results

Replace the existing Quiberon Bay sample data with your own ICP-MS analytical results to calculate enrichment factors and geo-accumulation indices.

Step 3

Customize Assessment Criteria and Branches

Tailor the toxicity probability nodes and source identification branches to align with your specific environmental research requirements and regional guidelines.

Frequently asked questions

The template covers methodology, ecological risk assessment, sediment quality assessment, source of contamination, study area, and general factors controlling MTE levels for elements Cr, Mn, Fe, Co, Cu, Zn, As, Cd, Hg, Pb.

Follow the ECOLOGICAL RISK ASSESSMENT branch: compare your data to ERL/TEL & ERM/PEL guidelines and calculate m-ERM-Q. If m-ERM-Q < 0.5, the sediment has <21% probability of toxicity.

EF (Enrichment Factor) <2 indicates no enrichment, 2<EF<5 moderate. Igeo (Geoaccumulation Index) <0 unpolluted, 0<Igeo<1 unpolluted to moderately. PLI (Pollution Load Index) <1 no pollution, 1<PLI<3 moderate.

Yes, you can edit the STUDY AREA branch to replace Quiberon Bay and Gulf of Morbihan with your own locations, and update sample numbers and dates.

The template is designed for marine sediments, but you can adapt the methodology and assessment criteria for freshwater systems by adjusting guideline values.

Natural sources include soils & rocks erosion and weathering process. Anthropogenic sources include shipping activities, municipal run-off, mariculture, agriculture, and surface run-off.

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