Raise healthier better educated children: Influence of the pregnant woman of the class clan to going of petrol

Raise healthier, better educated children: Influence of the pregnant woman of the class clan to going of petrol
The petrol is solvent and fuel with extremely wide use on the industry, volatility is great. Its principal ingredients are hydrocarbon and unsaturated hydrocarbon of saturation of fat clan, still mixed with fragrant hydrocarbon and a few sulphides. Insoluble in water, apt to be soluble in the fat, because production method and place of production are different, there is the difference between its composition and toxicity. The petrol is mainly used as the fuel of the internal-combustion engine, besides industry of oil refining, are used as the solvent in industry such as rubber, synthetic leather, paint, dyestuffs, pharmacy, printing. In the production environment, the petrol is absorbed by the respiratory tract in the form of vapour mainly, absorb little by the skin. Enter most of internal petrol to discharge from exhalation quickly, the small part is discharged by the kidney. The petrol mainly acts on the central nervous system in the body for the anaesthetizing poisonous substance, cause the balanced obstacle of a kind of lipid in the nerve cell, the early cerebral cortex inhibits the function from lacking proper care, anaesthesia function takes place later. Anaesthetize symptom at the time of the slight acute poisoning of petrol, have a headache, be disgusting, vomit, unable dizzily and vigorously, palpitation, eyesight are fuzzy, the gait is unstable, absent-minded, have mucous membrane stimulate symptom at the same time, shed tears, flow tears, conjunctiva congest, cough. Severe acute poisoning is rare, can distribute big, slow in reaction to the light or disappears going into a coma, twitching, nystagmic, pupil. Some cases are shown as insane or hysteria kind break out. Can lose consciousness suddenly under the extremely high density, diastaltic breath stopped and died. Chronic poisoning of petrol is mainly shown as neurasthenia syndrome and digestive system obstacle, Shang Ke changes spirit, exchanges excitement, capricious. A few patients can present similar hysteria and one kind of symptoms. It is obtuse to check hand, eyes, tongue trembling, ataxia, sense of smell objectively, the visual field shrinks. Women generally relatively men sensitive to the petrol, can present period disorder and pausimenia symptom and become more serious. The reproduction about the petrol, research report toxic in development are few, and mostly observe and allow the influence of the density at the time of level of 300 milligrams per cubic meter at most, lack the observation material while contaminating to the high density. To exposed to the intersection of female worker and 2384 people of petrol, go on result that observe in the rubber industry someone, compared with female worker of control group, pregnant machine can see unusual, flow, early yield also high. When but regard as and engage in the environment there are other chemical materials at the same time, influence pregnant process. Someone has investigated 360 viscose female workers of one rubbery products factory, they contact petrol and two chlorine ethane at work, the petrol density is allowing density range in the air, two chlorine ethane density has 41.5% of the air samples that exceed allowing 1.2-2.4 times of density. Female worker miscarry early naturally with viscose the morbidity of yield and pregnant hypertension and syndrome is higher than the female workers of control group, there are significance differences on statistics. What merits attention is, the petrol can enter foetus' body through the placenta protective screen, and can accumulate in the foetus organize. It determine somebody contact 85 person rubber plant petrol female worker blood, embryonic tissue at the time of induced abortion and just before giving birth when petrol content at foetus bloods funicular, find that, as 100% o'clock, the petrol content is equivalent to 260% in the embryonic tissue like the petrol content in pregnant woman's blood of the above class clan; Regard petrol content of lying-in woman's blood as 100% hour, the petrol content is equivalent to 140% in the funicular blood. Meanwhile, contaminate to the big female mouse for 25-30 days in petrol of density of 300 milligrams per cubic meter, mate, put to death after continuing contaminating for 14-18 days after gestation, analyze the petrol content in female mouse and fetus mouse organize, the intersection of petrol and content higher than placenta, uterus, the intersection of mother and the intersection of mouse and the intersection of blood, liver, brain,etc. and content in the organization in fetus mouse organize finally, determine with the human body the result is identical. Because the petrol can be accumulated in the body, it is relatively slow to list the speed, when pregnant female workers give a birth after breaking away from and keeping in touch for 56 days, can still detect the petrol in the blood. Human body observe and the intersection of animal and experiment prove the intersection of petrol and until petrol density increase to increase in the air content under blood, and is up to the growth in contact time, animal's extension of time of contaminating at the same time, the petrol density also increases in the blood. So, work in the environment of the petrol of high density continuously for a long time, the impact on foetus is that one is worth paying attention to and continuing observing the problem studied. The petrol can since discharge in the milk, the petrol density is about 12%-18% of content in blood in the milk. And contact petrol female worker's milk and secrete the persons who reduce prominently more than the female workers of control group. Workshop that our country stipulate at present petrol it allows density to be each 300 at most in the air.

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