Nickel release test

Nickel - a slightly yellowish silver-white malleable metal, is a magnetic transition metal. It is not only the basic material for making nickel alloys, but also an alloying element in other alloys (iron, copper, aluminum-based alloys, etc.). The application of nickel is determined by the corrosion resistance of nickel. Adding nickel to the alloy can enhance the corrosion resistance of nickel. The field of stainless steel and alloy production is an application field of nickel. Nickel is also an element that can easily cause contact allergies. Nickel is released from some nickel-containing materials and absorbed by the skin after long-term contact with the skin, causing allergies in some individuals; further intrusion into soluble nickel salts can lead to contact dermatitis. Certain items that have direct and long-term contact with the human body will be involved in nickel release issues, such as metal rivets, buttons, fasteners, zippers, metal plates and markers on clothing, jewelry, mobile phones and other products.

Children's products include metal rivets, buttons, fasteners, zippers, metal plates and markers on toys or children's clothing; necklaces, bracelets, watch cases, watch straps, metal eyeglass frames, metal shells and metal buttons for consumer electronics (headphones, MP3s, digital cameras, etc.).

Place the object to be tested for nickel (Ni) release into the artificial sweat test solution for one week. Use atomic absorption spectroscopy, inductively coupled plasma spectroscopy, or other suitable analytical methods to test the concentration of dissolved nickel (Ni) in the solution.

GB/T 19719-2005 Jewelry Determination of nickel release Spectroscopic method
GB/T 28485-2012 Coated jewelry Determination of nickel release Wear and corrosion simulation method
EN 1810-1998 Body sensitive inserts. Reference test method for determination of nickel content by flame atomic absorption spectrometry
EN 1811:2011+A1:2015 Reference test method for the release of nickel from any snug assembly inserted into a piercing site of the human body and items that will be in direct contact with the skin for a long period of time
EN12472:2005 Standard test method for simulated wear abrasion and corrosion testing for the determination of nickel release from coating covering materials