Non-Root Vegetables
Above-ground non-leafy vegetables: tomatoes (fresh, not canned), peppers, squash, zucchini, eggplant, cucumber, green beans, peas, broccoli, cauliflower, brussels sprouts, asparagus, corn-on-the-cob, mushrooms. No within-row split per Cat 4 lock. Canned tomato Pb migration from lid solder is a Step 0E watch item; may sub-stratify canned vs fresh in Step 1.
This page is a Step 0 lock scaffold for Cat 4 Row 6. Literature evidence will be populated as routed source pages accumulate per the synthesis workflow in CLAUDE.md Part 9. The Step 0 lock document at Category4_Step_0_Output_LOCKED.md is the canonical reference for the row’s clean-vs-contaminated framing and platform attribution.
Who this page is for
Brand legal teams evaluating HMTc Cat 4 certification for the Non-Root Vegetables row need to know what the cited literature reports per panel metal, what the applicable regulatory caps are, and how this row relates to its clean-contaminated pair (when applicable). Retailer compliance teams stocking the produce, dried-goods, and snack aisles need the row-level assortment-eligibility view. HMT&C certification thresholds for products in this row are developed under the certification program at heavymetaltested.com, not on this page.
Methodology
This page reports what the cited sources say about heavy-metal concentrations in the Non-Root Vegetables row. Speciation is non-substitutable per CLAUDE.md Part 14 (iAs vs tAs, MeHg vs tHg, Cr-VI vs total Cr). Basis is preserved (as-sold or as-consumed depending on the product form). Non-detect handling follows each source’s convention. Pooling avoided across LOD/LOQ, period, geography, and analytical-basis differences. HMT&C certification thresholds for products in this row are developed under the certification program at heavymetaltested.com, not on this page; this public page reports literature evidence only.
Cat 4 lock empirical basis: Pass 2 occurrence-data extraction from the heavymetalindex.com wiki corpus (build claude/zealous-bhabha-d422c9, 896 source pages). The Step 0 lock document at Category4_Step_0_Output_LOCKED.md records the splitting decisions and platform attributions; this row inherits its scope from that document.
Literature Evidence Summary
Pending: regenerated by tools/evidence/apply-product-hmtc-evidence-summaries.mjs once sources route to this row and the pooling engine emits aggregate rows. Row 6 of the Cat 4 Step 0 lock is currently in scaffold state pending corpus routing of Cat 4 papers (892 source pages in the corpus as of 2026-05-16, ~52 of 128 Cat 4 cells have usable literature evidence occurrence data per the Pass 2 report).
Source Evidence Inventory
_Hand-curated section. Populated by the synthesis pass as Cat 4 sources route to this row. Initial scaffold state: zero contributing sources. The Cat 4 corpus search prioritizes sources reporting concentration data on the specific commodity in this row; broad-scope produce surveys are filed under the master.
Broad Product Context: Author-Scope Index
Pending: regenerated by tools/evidence/apply-product-broad-context.mjs once broad-scope Cat 4 sources route to this page.
Federal/Regulatory Limits vs Field Findings
Pending. Cat 4 regulatory landscape: Codex GSCTFF and EU Regulation 2023/915 set finished-product limits on fruits and vegetables (Pb, Cd) and on specific commodities (e.g., spinach Cd at 0.20 mg/kg per eu-2023-915); FDA Closer-to-Zero applies to infant fruit purées (Cat 1, not Cat 4) but informs the regulatory baseline; California Prop 65 covers cumulative Pb/Cd exposure across produce categories. Awaiting agency-page ingest.
Levers to reduce contamination
The Cat 4 Step 0 lock framework distinguishes lower-contamination row produce/seed rows from contaminated-platform commodity rows (where species or production system carries elevated metal load by characteristic). For this row, the levers below are ordered by impact magnitude per the literature evidence base; sourcing-and-agronomic levers dominate the per-product metal load, with processing-and-formulation levers offering additional reduction.
- Sourcing levers: origin region, supplier specification, soil-Cd or paddy-iAs pre-screening for at-risk commodities.
- Agronomic levers: soil amendments, water management, cultivar selection.
- Processing levers where applicable: washing, peeling, blanching for fresh-cut and frozen formats; refining for derivative products.
- Formulation levers: where the row contains multi-ingredient formats, reducing the platform-commodity fraction.
- Testing/QC levers: lot-level ICP-MS on raw commodity and finished product.
- Regulatory levers.
How standards math uses this page
The percentile arithmetic that informs HMTc Cat 4 thresholds for this row lives on the staff Standards Workbench (data/workbench/standards/non-root-vegetables.md, to be generated). This public page reports literature evidence; the workbench applies the Cat 4 methodology (which includes the literature evidence occurrence-data-driven derivation and below-LOQ regulatory-floor fallback per the Step 0 lock) to produce candidate threshold values. The gap between literature evidence and HMTc thresholds is named honestly on the workbench, not hidden.
Historical recalls and enforcement
Cat 4 (produce, nuts, seeds) regulatory enforcement intersects two domains: heavy-metal contamination (the focus of this row) and microbial contamination (FDA recall notices for E. coli/Salmonella/Listeria in fresh produce, a separate concern). FDA Total Diet Study and Pesticide Data Program surveillance reports establish the heavy-metal occurrence baseline (FDA 2022). State-level Cd-in-leafy-greens enforcement has been active in California under Prop 65; the related Mateel Environmental settlement framework has shaped compliance practice. Per CLAUDE.md Part 12, individual brand recall actions are not enumerated here.
Sources
Auto-generated from source-page frontmatter. The “Used on this page for” column is populated by the orchestrator’s POPULATE-SOURCE-LEGEND action; pending entries appear as *[awaiting synthesis]*.
| # | Citation | Year | Type | Used on this page for |
|---|---|---|---|---|
| 1 | Rodríguez-Rodríguez et al. 2026. Trace Element Content in Tomato Fruit Grown with Sargassum-Based Biofertilizer, Agronomy | 2026 | Peer-reviewed | ES tAs, Cd, Pb, Ni, Cr occurrence in Tomato fruit (Solanum lycopersicum) from greenhouse trials, Spain; biofertilizer vs. control treatment groups |
| 2 | CFIA 2025. Toxic metals in selected foods – April 1, 2022 to March 31, 2023: Food chemistry – Targeted surveys – Final report, Canadian Food Inspection Agency | 2025 | Government report | CA tAs, Cd, Pb, tHg concentrations (n=470) |
| 3 | Luc et al. 2023. Evaluation of the Metallic Contamination of Market Garden Products around the Loumbila Dam, Open Journal of Applied Sciences | 2023 | Peer-reviewed | [awaiting synthesis] |
| 4 | Bedoya-Perales et al. 2023. Dataset of metals and metalloids in food crops and soils sampled across the mining region of Moquegua in Peru, Scientific Data | 2023 | Peer-reviewed | PE tAs, Cd, Pb, Cu, Zn concentrations (n=341) |
| 5 | Tjoa et al. 2023. Nickel acquisition affected by root density of mono- and mixed-cropping peanut and choy sum, Jurnal Penelitian Kehutanan Wallacea | 2023 | Peer-reviewed | [awaiting synthesis] |
| 6 | Doris et al. 2023. Determination of cadmium and lead in vegetables marketed in Quito, Ecuador, Revista Internacional de Contaminacion Ambiental | 2023 | Peer-reviewed | [awaiting synthesis] |
| 7 | Wang et al. 2023. Deterministic and Probabilistic Health Risk Assessment of Toxic Metals in the Daily Diets of Residents in Industrial Regions of Northern Ningxia, China, Archives of Environmental Contamination and Toxicology | 2023 | Peer-reviewed | CN Al, tAs, Cr, Cd, Ni, Pb occurrence in 187 samples (36 drinking water + 151 food) from villages and towns in industrial regions of northern Ningxia,… (n=187) |
| 8 | Bora et al. 2022. Quantification and Reduction in Heavy Metal Residues in Some Fruits and Vegetables: A Case Study Galați County, Romania, Horticulturae | 2022 | Peer-reviewed | [awaiting synthesis] |
| 9 | Diyarov et al. 2022. The effect of food processing on the content of heavy metals in vegetables, Chemical Bulletin of Kazakh National University | 2022 | Peer-reviewed | [awaiting synthesis] |
| 10 | Orywal et al. 2021. Health risk assessment of exposure to toxic elements resulting from consumption of dried wild-grown mushrooms available for sale, PLoS ONE | 2021 | Peer-reviewed | PL/EU tHg, Pb, Cd, tAs occurrence in 80 samples of dried wild-grown mushrooms (40 Boletus edulis, 40 Xerocomus badius) purchased from 5 European supermarket chains… (n=80) |
| 11 | Wang et al. 2021. Mercury accumulation in vegetable Houttuynia cordata Thunb. from two different geological areas in southwest China and implications for human consumption, Scientific Reports 11:1470 | 2021 | Peer-reviewed | [awaiting synthesis] |
| 12 | Grochowska-Niedworok et al. 2020. Assessment of cadmium and lead content in tomatoes and tomato products, Roczniki Państwowego Zakładu Higieny (Annals of the National Institute of Hygiene) | 2020 | Peer-reviewed | PL/EU Pb, Cd occurrence in Fresh and processed tomato products purchased in Polish retail and local markets; variety includes conventional, organic, multiple varieties,… (n=25) |
| 13 | Abdullahi 2019. Analysis and Evaluation of the Effect of Heavy Metals in Fruits and Vegetables, International Journal of Trend in Scientific Research and Development | 2019 | Peer-reviewed | [awaiting synthesis] |
| 14 | Ametepey et al. 2018. Determination of heavy metals in selected vegetables from markets in Tamale Metropolis, Ghana, International Journal of Food Contamination | 2018 | Peer-reviewed | GH Cd, Pb, Cr, Ni, Mn, Fe, Zn, Cu concentrations (n=75) |
| 15 | Karatasli 2018. Radionuclide and Heavy Metal Content in the Table Olive (Olea europaea L.) from the Mediterranean Region of Turkey, Nuclear Technology & Radiation Protection | 2018 | Peer-reviewed | TR Pb, Ni, Cr, Fe, Cu, Zn, Co, Mn occurrence in 26 table olive samples collected from 26 distinct districts across Adana, Osmaniye, and Hatay provinces in the Mediterranean… (n=26) |
| 16 | Talib 2018. Determination of lead and cadmium in carrots and cabbage available in local markets, Journal of University of Babylon for Pure and Applied Sciences | 2018 | Peer-reviewed | [awaiting synthesis] |
| 17 | Ahmed et al. 2017. Arsenic Contamination of Water-Soil-Crop System in an Industrial Area of Bangladesh, International Journal of Environment | 2017 | Peer-reviewed | [awaiting synthesis] |
| 18 | Jitender et al. 2017. Heavy Metals in Soil and Vegetables and their Effect on Health, International Journal of Engineering Science Technologies | 2017 | Peer-reviewed | [awaiting synthesis] |
| 19 | Jaishree et al. 2015. Heavy metal accumulation in vegetables irrigated with industrial effluent, International Journal of Innovative Research in Science, Engineering and Technology | 2015 | Peer-reviewed | [awaiting synthesis] |
| 20 | Mirończuk-Chodakowska et al. 2013. Cadmium and Lead in Wild Edible Mushrooms from the Eastern Region of Poland’s ‘Green Lungs’, Polish Journal of Environmental Studies | 2013 | Peer-reviewed | PL/EU Pb, Cd occurrence in 21 mushroom species (18 wild, 3 cultivated), 3 specimens each; wild species sampled from 6 communal areas in… (n=63) |
| 21 | Reczajska et al. 2005. Determination of Chromium Content of Food and Beverages of Plant Origin, Polish Journal of Food and Nutrition Sciences | 2005 | Peer-reviewed | [awaiting synthesis] |
Page history
The five most recent substantive edits to this page. The full version history lives in git; when DOI minting comes online (see schema docs), each entry below will also link to a version-pinned DataCite DOI.