Mi tam tak chuan Chemistry khawvelah kan cheng a ni tih hi kan lo hre tawh thin mai thei e. Thing leh mau, nungcha te mai bakah he kan taksa ngei pawh hi chemicals chi hrang hrang inchawhpawlh in a a siam a niin, kan taksa a chemical reactions chi hrang hrang avangtea nung leh che thei kan ni. Amaherawhchu, min hualveltu chemicals te hi hlauhawm lo leh taksa tana tangkai an ni vek lo va. Chutih ahnekin kan taksa a natna hlauhawm tak tak leh harsatna chi hrang hrang thlen a, thihna hial thlen thei chemicals siamchawp (man-made chemicals) sang tam takin min hual vel reng a ni.
Kan inchhung theuh in fang dawn teh ang: Thut pindan te, bual in te, choka leh mut pindan thlengin, kan nitin nuna bet nghet em em thil tam tak te hi chemicals chi hrang hrang, an nihna (properties) leh hlauhawm zia kan hriat ngai hauh loh atanga siam an lo ni fur mai. Rinhlelh kai lo leh pawisawi lo anga lang heng pheikhawk te, saidawium leh plastic bur te, mut puan leh thuamhnaw te, rimtui chi hrang hrang te, sofa te, naupang lawm (toys) chi hrang hrang te, sahbawn te, TV leh computers, etc te hian chemicals hlauhawm tak tak, kan taksa a cancer leh natna chi hrang hrang thlen thei an pai fo a ni tih kan hriat a pawimawh hle a ni. Khawvel pum huap a tuai an lo pun tak nachhan te, mipa chi tha lo (reduced fertility) avanga inthlahchhawn chungchanga harsatna kan lo tawk ta fo te hi chemicals hlauhawm tak tak, an hlauhawm zia kan hriat si loh te vang an ni.
1. Cosmetic a hman thin chemicals thenkhat te: Cosmetic product zawng zawngte hi chemicals chi hrang hrang inchawhpawlh atanga siam vek an ni a. Heng shampoo te, perfume te, conditioner te, lip gloss leh lipstick te, body lotion leh body spray te, hair gel leh face wash te, hmai hnawih chi hrang hrang leh thil dang tam takah te hian chemicals hlauhawm tak tak a awm a ni. Kum 2009 April thla khan North Eastern Hill University, Shillong a Mizo nula awm te hnen atangin cosmetic product chi hrang hrang za chuang, company hrang hrang siam lakkhawm a ni a. Ngun taka zirchian an nih hnuah chung lakkhawm zinga chemicals hlauhawm, mihring te a harsatna chi hrang hrang thlen thei hriat thei thenkhat te chu i lo bih chiang teh ang.
i) Parabens: Chemicals chi khat, cosmetic leh damdawi vawng tha tur (preservative) atana an telh thin a ni. Chi hrang hrang a awm a, chung te chu: methyl paraben, ethyl paraben, propyl paraben, butyl paraben, isobutyl paraben, isopropyl paraben leh benzyl paraben te an ni. I cosmetic product chi hrang hrang hman te kha han bih chiang la, ingredients-ah heng zing ami te hi an tel leh tel loh lo enchiang chhin teh. Hun rei tak chhung chu heng parabens te hi taksa hriselna atana him nia ngaih an nih hnuah chu ngaihdan chu tunhnai maia zirchianna chuan a hnawl tan ta. Mi thenkhatah vun thak leh allergy chi hrang hrang a awm tir thei a. Tun hnai maia scientific report pakhat chuan hnute cancer a bawk (tumor)-ah parabens te hi hmuh an nih thu a tarlang bawk. University of Reading, UK a Molecular biologist Phillipa Darbre chuan heng parabens te hi zakhnuai a kan hnawih thin deodorant atang te, body lotion leh body spray atangte a taksa a lut an nih thu a sawi a ni.
ii) Triethanolamine (TEA): Triethanolamine te hian kan taksa-ah cancer leh allergy te a awm tir thei nia hriat a ni a. Lung, thisen zam leh pumpuiah harsatna chi hrang hrang siamin, chuap, mit leh hnarah thak leh harsatna (irritation) a awmtir thei bawk . Tin, immune system (kan taksa a natna hrik lo do tu) an ti chak lo va, endocrine disruptor ni ngeia hriat a ni bawk. US, EU, Japan leh Canada-ah te chuan hman tur zat bituk in, uluk taka khuahkhirh an ni tawh nghe nghe.
iii) Oxybenzone : Benzophenone-3, Eusolex 4360 leh Escalol 567 tia hriat a ni bawk. Ni atanga engzung hlauhawm lo kal ultra violet rays chi hnih UVB leh UVA te a lo hip ral theih avangin sunscreen atana hman a ni. Kum 2008 a US Centers for Disease Control and Prevention in National Health and Nutrition Examination Survey an neih a an enfiah mihring zun za zela 96.8 ah he chemicals hi hmuh a ni. EU-ah chuan eng thil siamchhuahah pawh 0.5% aia a tam chuan “Oxybenzone telh” tih chiang taka tarlan a ngai. He compound hi mihring vun chhungah lut in chutah chuan ni eng nena tangkawp in free radicals (atom emaw, atom inzawm khawm electron kawpkim lo nei, taksa tana hlauhawm tak) tam tak an siam a, chuvang chuan photo-carcinogen (photon= eng zung, carcinogen= cancer thlen thei) ni ngeia ngaih a ni. Tin, DNA a hrui pahnih (strands) inzawm a tichat in, a tichhe thei a, Vitamin-D tlakchhamna leh vun natna chikhat melanoma a awmtir thei bawk. Kum 1993 atang daih tawh khan oxybenzone hman hi nasa taka sawisel a lo ni tawh thin a; mahse tun thleng hian thil siamchhuah tam takah hmuh tur a la awm a ni.
iv) Octocrylene: Sunscreen chi hrang hrangah hmuh tur a awm. Ultra violet rays hip ral tura telh thin a ni bawk. A chunga kan tarlan oxybenzone ang bawka hlauhawm leh vun cancer (malignant melanoma) thlen theitu nia hriat a ni.
v) Methicone: Dimethicone leh cyclo-methicone te hi hman lar deuh te chu an ni a. Heng methicone awmna thil siamchhuah hmangtute zingah thak, vun sen leh vual, thawk harsa, ka, hmui, biang leh lei vung te a awm fo.
vi) Octyl methoxycinnamate (Octinoxate): He chemicals hi sunscreen leh hmai hnawih chi hrang hrangah nasa taka hman a ni. Taksaah allergy a awm tir a, immune system tichak lo in inthlahchhawna lamah nghawng thalo tak tak a thlen thei. Chungte chu: mipa chi chaklo (reduced fertility), naute piangsual leh nau thang tha lo te a ni. Tin, inthlahchhawnna lama hman taksa bung hrang hrangte (reproductive organs)-ah cancer a thlen thei bawk. Hei mai bakah kan taksa peng hrang hrang heng lung leh thisen zam te, pumpui leh chaw paitawihna kawng (digestive tract) te, thawk lakna kawng (respiratory system)-ah te harsatna chi hrang hrang thlen thei a ngaih a ni a, endocrine disruptors ni ngeia hriat a ni bawk a ni.
vii) Benzophenone leh benzophenone-5: A chunga kan sawi oxybenzone ang bawka hlauhawm leh tha lo an ni a, hair gel, sunscreen leh body lotion hrang hrangah hman an ni.
viii) Benzene leh hydrocarbons thenkhat te: Heng ha nawhna hlo te, tin hnawih (nail polish) te, sam rawng thlakna (hair dye) te, sahbawn leh thil dang dang a rawng pawlh (artificial colour) leh lip gloss-ah te hian petroleum atanga lakchhuah thil chi hrang hrang telh a ni. Perfume leh rimtui chi hrang hrangah benzene leh benzene chhungkua (benzene family) tam tak telh an ni thin bawk. Heng thil te hi ingredients-ah tarlan an ni ngai lo a, a chhan chu mihringte tana an hlauhawm zia hriatchian an ni tawh hlawmin, taksa a hman tur thil chi hrang hrangah telh phal an nih loh hlawm vang a ni. A chunga kan sawi benzene phei khi chu DNA ti chhia a, thisen cancer thlen theitu a ni tih hriatchian a nih tawh avangin ramchangkang zawkah te chuan laboratory-ah takngial pawh hman phal a ni tawh lo (India ramah chuan nasa taka hman a la ni). Tin, benzene hian thling (bone marrow) a ti chhia a, kan thisena red blood cell ti tlemin, anemia a awm tir thei. Thisen chhuak tawp thei lo leh immune system chak lo a awm tir thei bawk. Kan hriat atana tha chu vaihlo ah hian benzene a awm tih hi a ni. Heng rawng (paint leh dye)-ah te, thil silfai/tihfaina atana hman (detergent)-ah te, puak thei thil ah leh rannung thahna hloah te benzene hi a awm thin bawk.
Khing a chunga kan tarlan tak bakah khian kan taksa a natna chi hrang hrang thlen thei chemicals chi hrang tam tak cosmetic product-ah te hian an awm a ni tih hi i hria ang u. Kan duham avang leh nalh kan duh luat avanga kan chetvelna hian thihna khurah min hnuk lut thin a lo ni. Kan thil siamchhuah lei chu a to viau emaw, man tlawm te emaw pawh ni sela, cosmetic product zawng zawnga an chemicals hman hi a inang tlangpui a. A chang chuan hming hran an vuah mai thin chauh zawk a ni. I cosmetic product lei turah a chunga kan tarlan chemical compound te khi an awm anih chuan, eng anga company tha kutchhuak pawh ni sela lei lo ngam a tha.
