Marketing for Tableware

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:

• “safe” levels of lead and other toxins. For example, California Proposition 65: <0.1 ppm; Massachusetts 105 CMR 460.200 Lead
• Poisoning and Control: <2 ppm; Food and Drug Administration (FDA): <0.5 ppm for mugs. In this study, ceramic cups
• Although public health agencies, such as the Food and properly cleaned, and filled with freshly prepared 4% (v/v)
• cadmium-free tableware for the desired health level of their labeled 20 mL vials, which were stored until used for ICP
• cadmium-free labeled drinkware sold in the U.S were Table 1. All eight cups in the sample were advertised as
• 2. Experimental 104 to 2,050, as shown in Table 1.
• DI (deionized) water, unless otherwise specified. Deionized The machine is certified to detect ranges of lead (13.1-14.5
• water was purified with Milli Q Direct Q-UV (Merck KGaA, mg/kg), cadmium (21.0-22.4 mg/kg), and chromium
• Darmstadt, Germany). A series of standard solutions (17.1-18.3 mg/kg). (22) Since ICP can only analyze liquids
• analysis of ten standard solutions ranging from 5.00 ppb to spectrometry to analyze samples. First, an electromagnetic
• 500 ppm. The peak area of the signal was employed to field is used to ionize argon gas, thereby creating plasma. The
• Table 1. Cups used in the analysis.
• Table 2. Levels of lead, cadmium, chromium, and zinc in the ceramic.
• Table 3. Levels of lead, cadmium, chromium, and zinc leaching from the glaze into the liquid. Each cup was tested three times to measure
• (21) Compliance limits for cadmium range from 0.189 ppm to
• #4) and that cadmium concentration from 4.62 ppm (cup #2) of the term „Lead Free‟ in the labeling to be false and
• “Nearly 1 in 5 (18%) of all deaths and more than 1 in 4 (28.7%)
• 1a97/AS%3A377365747257344%401466982413427/downlo
• acceptable levels? PLoS Biol. 15, 12 (2017), e2003066. https://eur-lex.europa.eu/legal-content/EN/TXT/PDF/?uri=CE

Methods (brief)

• over time were investigated. Samples were examined by using Inductively Coupled Plasma (ICP) analysis. Our findings show a
• While chromium as a pure metal is not toxic to the human 2.1. Acid Digestion of Glaze
• cadmium-free tableware for the desired health level of their labeled 20 mL vials, which were stored until used for ICP
• family? One convenient option is to visit the e-commerce (inductively coupled plasma mass spectrometry) analysis.
• products to interested buyers. There, people interested in 2.2. Acid Digestion of Ceramic
• cadmium-free labeled drinkware sold in the U.S were Table 1. All eight cups in the sample were advertised as
• Two acid digestion analyses were performed. The first acid
• digestion measured the leaching of metals from the glaze (cup
• exterior), and the second acid digestion determined metals in The liquids from the two types of acid digestion were
• Fisher Scientific (Chicago, IL). Solutions were prepared with Plasma-Optical Emission Spectrometer (ICP) by Varian Inc.
• Darmstadt, Germany). A series of standard solutions (17.1-18.3 mg/kg). (22) Since ICP can only analyze liquids
• containing lead, zinc, cadmium, and chromium were prepared and gasses, acid digestion methods had to be used to extract
• Scientific (Chicago, IL). Calibration curves were based on the be examined. An ICP machine uses optical emission
• analysis of ten standard solutions ranging from 5.00 ppb to spectrometry to analyze samples. First, an electromagnetic
• generate the calibration plot for calculating concentrations of sample to be analyzed is then irradiated with this plasma,
• heavy metals in sample solutions. Each element‟s calibration exciting the component atoms of the sample. When the
• above 0.99. Standard solutions and sample solutions were release emission rays that correspond to their respective atoms‟
• on the same day. All standard and sample solutions were and intensity of the photon rays, determining both the element

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

• Fish — marine, non-predatory (sardines, anchovies, salmon, cod)
• Mercury
• Cadmium
• Lead
• Arsenic
• Chromium

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.