Pencils are the most common school supplies, and are available to preschoolers and elementary school students every day, but the safety of pencils is rarely known to parents. The reporter's investigation found that when parents buy pencils for their children, the main consideration is the shape, color, price, etc. of the pencil, but the safety of the pencil is often neglected. In fact, if the pencil is not safe enough, it will bring great harm to the child's health. For example, the lead in the pencil will damage the nerves, hematopoiesis and reproductive system of children and adolescents, hinder the growth and development of children and intellectual development, and harmful in poor quality pencils. Heavy metals can even damage your child's organs.
Pencil toxin accumulation is less harmful
The reporter checked the relevant information and found that the harmful substances contained in the pencil exist in the lead, paint, adhesive and other parts, but the toxins contained in each part are different, especially the difference in the pencil composition of different brands is also huge. . In this regard, the pen industry experts said that the main components of the black lead core are graphite and clay, and the pencil lead core that meets international safety standards does not contain metal lead elements, but be wary of some bad businesses to cut corners and mix other black cores. Substance, inferior black core may contain a variety of heavy metal elements. In addition to the lead core, the paint on the surface of the pencil pen may contain various heavy metal elements such as lead, mercury, arsenic, etc., especially in some inferior pencils produced by unlicensed small workshops. It is worth noting that the “lead poison†in pencil is not only an element of metal lead, but a general term for various toxic substances contained in pencils.
What are the effects of toxins that may be contained in inferior pencils on children's health? After interviewing a number of pediatric chief physicians at the Children's Hospital of the City, the reporter learned that the heavy metals contained in the pencil may be brought into the human body under the action of contact with the human body or friction. Soluble heavy metals in the human body have reached a certain amount, which is extremely harmful to the human body. For example, the effects of lead on the health of children and adolescents are mainly caused by damage to the human nerves, hematopoiesis and reproductive system, hindering children's growth and development and intellectual development. Heavy metals in pencils also damage children's organs.
Pediatricians also pointed out that although the pencil contains a variety of toxins, its content is relatively small compared to the "poisoning dose". It will not cause obvious harm to the body in a short time, but if it is often exposed to toxic pencils, the toxins will accumulate to a certain extent. Causes greater damage to the child's health. Therefore, parents should pay attention to the bit by bit in the environment, even a small amount of toxins should be paid attention to, so as not to "poison" after the child accumulates.
There are six big choices for safety pencils.
In an interview, the reporter found that for parents who prepare pencils for their children, the quality is not obvious. Some parents think that it is enough to buy cheap pencils. They don’t pay attention to the fluency of use. It's easy, especially to ignore the potential impact of pencils on your child's health. Even though some parents are aware of the dangers of toxic pencils, they have no idea how to buy a safety pencil. Experts advise that the purchase of safety pencils should choose pencils that meet national standards. It is reported that the current national safety standard for pencil products is “General Requirements for Safety of Student Supplies†(GB 21027-2007), which strictly stipulates eight heavy metal elements such as lead, mercury, arsenic, antimony, bismuth, cadmium, selenium and chromium. Migration limit. This safety standard is a mandatory national standard. Student supplies that do not meet technical specifications and safety standards will not be available in the market.
Although there are strict regulations on national standards, the current pencil market is mixed. In order to ensure the safety of children's pens, parents should take good care of them and pay attention to the safety of pencils. Do not use "toxic" and quality for children because of the low price. Poor pencil. At the same time, we must avoid going to the other extreme, that is, "the safety of pencils with high prices must be guaranteed." Experts suggest that consumers can choose a cost-effective pencil product based on safety.
How to buy high quality and low price safety pencils, Leyi, a person in charge of a well-known pencil company, summed up the six "cheats" of safety pencils for parents: the first step is to "see", choose a pencil, first check The trademark, place of origin, and the certificate of “three standards†on the product packaging, and then check whether the pencil of the pencil is straight, whether the lead is in the middle of the pen, and the diameter of the lead is large. The diameter of the lead of the normal writing pencil is generally 2.2mm, which is inferior. The pencil is only 1.7 or 1.8mm, and whether the lead is easy to break. It should also be noted that the whiteness of the pencil wood may be bleached, and if the wood is too red, it is highly likely that a stain is added. Such pencils are more toxic. Parents can give priority to log pencils, have natural lines, and do not contain bleach and stains that are harmful to humans. The second step is “touchingâ€. By touching the pencil, you can feel whether the pen body is smooth, has no hairiness, and the hardness of the pen body. The third step is to “smell†and feel the smell of wood, whether the taste of the pencil is pungent, whether there is paint or not. The fourth step is to “write†and actually use a pencil to try out how smooth it is. The fifth step is “sharpeningâ€. Use a pencil sharpener to check whether the pencil is easy to be rolled. Check the stickiness of the pencil shavings. The high quality pencil lead ink should be connected to the pen wood and the lead core is even. The sixth and most important point, “passâ€, focuses on the inspection standards passed by the pencil manufacturer, including the production standards and safe use standards, at least the pencils that meet the national standards, preferably the various metal elements. Brand pencils that are more demanding and meet international standards.
Source: Internet
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