Extractable Heavy Metals Testing
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Note: this service is for Research Use Only and Not intended for clinical use.
Detection of harmful heavy metals is one of the routine monitoring items of ecological textiles. With the popularization of the concept of green consumption, consumers and enterprises have paid more and more attention to the safety and health performance of textiles, ecological textiles have become the mainstream of the market, and the analysis of heavy metal residues in textiles has received more and more attention. The sources of heavy metals in textiles mainly include: some dyes and auxiliaries and metal complexing agents used during processing; natural fiber raw materials enrich the heavy metals in the surrounding environment during the growth process. The cumulative toxicity of heavy metals in textiles to the human body is quite serious. The heavy metals entering the body not only pose a direct hazard to health, but when the heavy metals in the body reach a certain level, they can cause irreversible huge damage to the body. Especially for some groups, such as the growth and development of children, the damage caused by heavy metals is greater than that of adults. Alfa Chemistry extracts heavy metals by use of artificial acidic sweat solution according to ISO 105-E04 (testing solution Ⅱ) to detect the content of heavy metals in textiles.
Extractable Heavy Metals Limits (according to OEKO-TEX Standard 100) and Hazards
| Extractable Heavy Metals (mg/kg) | Product Classes | Hazards | |||
|---|---|---|---|---|---|
| Ⅰ Baby | Ⅱ In direct contact with skin | Ⅲ With no direct contact with skin | Ⅳ Decoration material | ||
| Sb | <30.0 | <30.0 | <30.0 | - | Lung cancer; radiation damage to the skin |
| As | <0.2 | <1.0 | <1.0 | <1.0 | Damage to the central nervous system; cardiovascular dysfunction; gastrointestinal dysfunction |
| Pb | <0.2 | <1.01 | <1.01 | <1.01 | Damage to the central nervous system, kidneys and immune system of humans; potential cancer |
| Cd | <0.1 | <0.1 | <0.1 | <0.1 | Accelerate calcium loss of bone, cause fractures or deformation |
| Cr | <1.0 | <2.0 | <2.0 | <2.0 | Cause lung cancer, nasal cancer; blood diseases, liver and kidney damage |
| Cr (Ⅵ) | <0.5 | ||||
| Co | <1.0 | <4.0 | <4.0 | <4.0 | Cause lung cancer; adversely affects the respiratory system, eyes, skin, heart and other organs |
| Cu | <25.02 | <50.02 | <50.02 | <50.02 | Anemia caused by overdose; great damage to liver, kidney, and stomach |
| Ni | <1.03 | <4.04 | <4.04 | <4.04 | It has a stimulating effect on human skin, mucous membranes and respiratory tract, can cause dermatitis and tracheitis, and even pneumonia; it has protective effects in kidney, nose and liver, and can induce nasopharyngeal cancer and lung cancer |
| Hg | <0.02 | <0.02 | <0.02 | <0.02 | After entering the human body, it sinks into the liver in large amounts, causing kidney damage, which can cause necrosis of renal tubular epithelial cells; cause brain and central nervous system damage; may cause cancer |
1 No requirement for accessories made from glass
2 No requirement for accessories and yarns made from inorganic materials, respecting the requirements regarding biological products
3 For metallic accessories and metallized surfaces: <0.5mg/kg
4 For metallic accessories and metallized surfaces: <1.0mg/kg
Testing Standards
BS 6810-1:1987 Determination of metals in textiles. Analysis by atomic absorption and colorimetric spectroscopy
BS 6810-2:2005 Determination of metals in textiles. Analysis by atomic emission spectroscopy
BS 6648:1986 Methods for wet ashing of textile materials for subsequent determination of metal content
OEKO-TEX standard 100
GB/T 17593 Textile - determination of heavy metals
Testing Methods
Inductively coupled plasma atomic emission spectroscopy（ICP-AES）
Atomic Absorption Spectroscopy（AAS）
Atomic Fluorescence Spectroscopy（AFS）
Colorimetric method
Alfa Chemistry Testing Lab
As an authoritative testing organization with many years of experience, Alfa Chemistry Testing Lab provides reliable extractable heavy metals testing services for all types of fabrics, including but not limited to cotton, linen, silk, woolen fabric, leather fabric, chemical fiber fabric, blended fabric, modal fabric, etc., please consult our technical experts for details.
Do not know how to place an order, please refer to the flow chart shown below.
Submit quotation request |
A technical manager will contact you within 24 hours |
You will review and approve the final price and place an order |
Confirm with you and make the payment |
Instruct you to ship your samples and form |
Analytic report delivery |
