Syed Ismail 2017 - heavy metals in low-priced toys

Syed Ismail and colleagues measured total elemental content in 42 low-priced toy samples from convenience shops in urban Selangor, Malaysia. The toys were imported from China and grouped by toy use category and material; the routeable evidence is for finished toy paint/coatings and accessible toy substrate materials, not for food or biological matrices. Measurements were made by HDXRF and reported as total content in ppm, so the results should not be treated as EN 71-3 migration-test values even though the paper compares them with EN 71-3:2013 Category III concentration limits.

Key numbers

• Sample frame: 42 low-priced toys (< MYR 10) imported from China and purchased from convenience shops in urban Selangor between December 2015 and March 2016.
• Toy-use categories: physical activity toys N=10, intellectual toys N=11, technical toys N=5, creative toys N=9, and social toys N=7.
• Material categories: paint coated n = 4, printed ink n = 2, polymer n = 3, textile n = 2, paper n = 2, paperboard n = 5, metal n = 3, and plastic n = 21.
• Detection summary from the abstract and Results: Zn in 97% (N = 41), Sr in 90% (N = 38), Cu in 79% (N = 33), Ni in 64% (N = 27), total Cr in 59% (N=25), Ba in 57% (N = 24), Pb in 50% (N = 21), Mn in 43% (N=18), and total As in 24% (N = 10); Cd, total Hg, and Sn were also detected.
• Table 4 reports EN 71-3:2013 Category III exceedance counts: Cd exceeded the 23 mg/kg limit in 3 samples, Co exceeded the 130.00 mg/kg limit in 1 sample, and Pb exceeded the 160.00 mg/kg limit in 3 samples.
• Table 4 uses ppm for toy-material concentration values and lists EN 71-3:2013 Category III comparison limits in mg/kg; the paper treats these as numerically comparable but did not perform a migration test.
• Total Cr was measured as Cr by HDXRF. The page does not classify it as Cr(III) or Cr(VI).
• Total As and total Hg were measured without speciation; the page labels them as tAs and tHg.

Table 4 material means, copied as reported

Values are mean ±SD where the source reports a standard deviation; single values indicate a single detected category value or no SD reported. ND means not detected in the source table.

Source-reported risk/exposure outputs

• The authors’ Figure 2 discussion reports HQ >1 for Sb in textile (HQ = 2.39) and plastic (HQ = 4.73± 6.68), total Hg in paint coated (HQ = 8.55) and metal (HQ = 1.99), and Sn in paint coated (HQ = 2.732), printed ink (HQ = 4.82), and plastic (HQ = 1.52±1.23).
• The authors state that all studied metals were within the generally acceptable cancer-risk range except Co (1.30E-02) and Ni (2.90E-02±4.10E-02), both found in metal toys.
• The paper states that plastic toys had detections for 14 elements and metal toys for 13 elements; paper had the fewest detected metals, with 5 elements.

Methods (brief)

The study purchased low-priced toys imported from China from convenience shops in an urban area of Selangor. The authors grouped the 42 toys into five ISO 8124-style toy-use categories and eight material categories. Heavy-metal content was measured using High Definition X-ray Fluorescence (HDXRF®) with an HD Rocksand XOS instrument (Model 800701-01). The paper states that XRF determines the total amount of heavy metals in toys; it does not report acid digestion, migration extraction, or bioaccessibility testing. Statistical analysis used SPSS Version 22, descriptive statistics, Kruskal-Wallis tests for material/toy-type comparisons, and Spearman correlation tests.

Implications

Certification (HMTc): This source supports Malaysia-market occurrence context for low-priced imported toys, especially accessible toy substrates and painted/printed toy materials. It should not be treated as a U.S.-market benchmark source, and the reported total-content HDXRF values should not be pooled with migration-test values unless the pooling method explicitly separates basis and analytical design.

Courses: The paper is a useful example of why total-content screening, EN 71-3 migration limits, and metal speciation must be kept separate. The chromium result is total Cr only, and the arsenic and mercury results are total-element findings.

App: If surfaced for consumer-product context, this source can say that a small Malaysian low-priced-toy survey found Cd, Co, and Pb exceedances against the source’s EN 71-3:2013 Category III comparison limits, with the caveat that the underlying measurement was HDXRF total content.

Wiki pages this source may touch

• toys-painted
• toys-substrate-materials
• lead
• cadmium
• chromium
• nickel
• mercury-total
• arsenic-total
• antimony
• barium
• cobalt
• copper
• manganese
• tin
• zinc

Verification notes

• PDF text was extracted with pdftotext -layout to /tmp/ingest.txt; the abstract, sample-collection section, Table 1, Table 4, Figure 2 discussion, limitations, and conclusion were checked against this page.
• Identity checks before creation: exact title Heavy Metals Content in Low-Priced Toys, first-author string Sharifah Norkhadijah Syed Ismail, raw handle MFK_cat21-16-arpn-journal-eas-2017, raw SHA-256 2ced095228061c8b6426ae9a4960080675bab64eafac54d723f27d0749623e10, and candidate cite keys ismail2017-low-priced-toys-metals / syed-ismail2017-low-priced-toys-metals were searched in wiki/sources/ and data/evidence/; no existing source page was found.
• DOI: no DOI was printed in the extracted PDF text or PDF metadata, so frontmatter keeps doi: null and no_doi_assigned: true rather than guessing.
• Units: toy-material concentrations are copied as ppm from Table 4; EN 71-3:2013 Category III comparison limits are copied as mg/kg from the source. No unit conversion was performed.
• Speciation: HDXRF reports total elemental content. The page labels arsenic as tAs, mercury as tHg, chromium as total Cr, and tin as total Sn; no inorganic arsenic, methylmercury, Cr(VI), or organotin result is claimed.
• Brand firewall: the paper describes low-priced imported toys and convenience-shop sourcing but does not provide brand-specific value tables in the extracted text. This page keeps results at material and category level.
• Product slug note: the source covers mixed low-priced toys and reports material categories including paint coated, printed ink, polymer, textile, paper, paperboard, metal, and plastic. The current closed taxonomy has no generic all-toys umbrella; toys-painted and toys-substrate-materials are the broadest correct toy-product routing scopes for the measured paint/coating and substrate material evidence. matrices is intentionally empty because the taxonomy does not include a non-food toy-material matrix slug. Selenium is retained in the frontmatter metals array as source-reported Se, but it is not listed under wiki pages because no dedicated selenium metal page exists in the current wiki tree.
• Jurisdiction note: MY reflects the purchase market and study location, CN reflects the stated manufacturing/import origin, and EU reflects the EN 71-3 regulatory comparison used in the Results tables.
• Evidence tier: B because this is a peer-reviewed primary market survey with transparent sample counts and analytical instrument, but it has a small convenience-shop sample frame and uses HDXRF total-content screening rather than confirmatory migration or bioaccessibility testing.

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.