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Heavy Metal Index

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Source

This source page is a mechanical bulk-ingest record for a PDF in the research-pulls corpus.

Page snapshot
Cited by6 pages
Metals measured1
Evidence tierB
Year2026

Overview

This source page is a mechanical bulk-ingest record for a PDF in the research-pulls corpus. It preserves source-level identity, routeable product/analyte scope, and exact extracted numeric lines for later human or fresh-context audit. It does not derive HMTc thresholds, percentiles, or brand-by-brand comparisons.

Key numbers

The worker extracted the full PDF text with layout preservation twice and compared extraction hashes before commit. The following lines are copied from numeric/table-bearing regions of the PDF and retain the source units and wording where legible:

  • UV radiation accounts for ~8% of terrestrial sunlight and is
  • and better mental health (9, 10). However, there is indisputable (31), some have exhibited reproductive toxicity to fish (32, 33),
  • AUCafter 290 Aafter ðλÞdλ (VC) (down a vibronic manifold). Atomic rearrangements, which
  • by pigments is often encountered in plants, as photosynthetic flavones (which account for 85% of flavonoids identified in
  • or quenching the resulting intramolecular ESPT product, leading to rapid conversion to VA–Pu–T2, which can re-equilibrate to the more stable VA–Pu–T1
  • On a model skin, DPDT is thought to undergo dynamic quench- cally highly (photo)stable (260, 261, 268) and demonstrate UV-
  • tion occurs, meaning that excited state population needs to general mechanism. Aqueous porphyra-334, after reaching a
  • bacteria have been achieved, there are notable drawbacks thus (178, 307–309). The same study on DES also revealed no delete-
  • is essential for photothermal therapy (329–332), agrochemical SDA was the most photostable derivative of SM measured on
  • Proton Transfer Reaction of 2,6-Diazaindoles and 2,6-Diazatryptophan in Studies of the Influence of Cyclodextrins on the Stability of the Sunscreen
  • Hydroxypropyl-β-Cyclodextrin: Effect on Photostability,” Journal of 232. R. P. Sinha, S. P. Singh, and D.-P. Häder, “Database on Mycosporines
  • Compounds in Brassica Vegetables,” Molecules 16 (2011): 251–280. Chromophores,” Chemical Reviews 117 (2017): 13502–13565.

Methods (brief)

  • natural photoprotective agents, either by direct extraction from the skin–sunscreen sample, all of which are measured at discrete
  • filter should be able to nonradiatively dissipate the energy of where AðλÞ is the measured absorbance of the UV filter sample at
  • Area under the curve index (AUCI) is the ratio of a sample’s inte- photoexcited molecule can undergo internal conversion (IC)
  • the only organisms to have developed effective UV defenses. The tion of the molecules in a (condensed phase) sample, thereby
  • annually (101–105), and with each new natural UV filter mole- pump pulse is set to, or near, the wavelength of the sample’s UV–
  • passes through the photoexcited sample. To replenish the sample
  • (I 0 ðλÞ) transmitted intensity of the sample gives the change in
  • which would be indecipherable otherwise. ecule decays after photoexcitation. Collected TA data can be ana-
  • sensitive detector setup as above. The 2D images collected can FIGURE 3 | Plant UV filters mentioned in this review.
  • Phenolic acids exhibit other properties which make them desir- bilizing effects of pigments by the oligosaccharide β-cyclodextrins
  • (DPDT), which is known to undergo radiative relaxation (231). hydrolysis under acidic conditions) (266, 267), MAAs are typi-
  • state lifetimes in fs-TEAS experiments, although there is no et al., the electronic absorption properties of many MAAs are
  • The NRD photophysics of many natural MAAs, although occa-
  • (MAAs) (232–236). The marine-derived UV filter molecules dis-
  • cussed herein are presented in Figure 4. MAAs are thought to be
  • NRD for many MAAs (107, 241, 257). The ultrafast deactivation
  • (108, 237, 238). The primary role of MAAs has been debated
  • of excited states in MAAs is attributed to minor geometry changes,

Implications

This page makes the source discoverable for category-level evidence routing. Values remain source-native and should be used only with the stated matrix, species, basis, geography, and censoring context from the paper. The page does not convert total mercury to methylmercury or use total arsenic as inorganic arsenic.

Wiki pages this source may touch

Verification notes

  • Identity check: DOI, raw handle, candidate cite-key, and SHA-256 were compared against existing wiki/sources/ pages before creation.
  • Full-PDF read: pdftotext -layout was run on the full PDF twice; extracted text hashes matched before the page was written.
  • Numeric verification: numeric/table-bearing lines were selected mechanically from the verified extraction and preserved without unit conversion or rounding.
  • Brand firewall: the worker skips PDFs when extracted numeric lines appear brand/manufacturer-sensitive; this page contains category-level or species-level evidence only.
  • HMTc firewall: no threshold, percentile, pass/fail, clean/dirty, or certification math is stated.

Update history

The five most recent substantive edits to this page, classified major (evidence or structure moved), correction (a published value or statement was wrong and has been fixed), or minor (narrative rewritten without changing the underlying evidence). Each description is derived from what the edit did to this page; the linked commit is the authoritative record, routine regeneration passes are excluded, and 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.

CommitDateChangeDescription
b01ec52c2026-08-04major2 sections added
d49e450f2026-08-03major5 sections added; narrative text revised