4.
Evaluation Of The Canned/Packed Fruit Juices From Local And Imported Origin For Their Heavy Metalcontents
by Nazeefa Fatima (2015-VA-14) | Dr.Saifur Rehmankashif | Muhammad Imran Najeeb | Dr. Fariha Arooj.
Material type: ; Literary form:
not fiction
Publisher: 2017Dissertation note:
The increased pollution has affected the quality of soil, air and water resulting in the contamination of food and causing serious problems to human health in all over the world. For example the intake of trace heavy metals in excess quantities by the consumption of contaminated food grown in polluted soil or by polluted water. Fruits and their juices are the part and parcel of the daily human lives. And these are one of the affected by the heavy metal toxicity. This study presents how much amount of heavy metals are present in commercially available fruit juices and not been safe for human use.
Purposeofstudywastoestimatethepresenceofheavymetalscontaminantsincommercially available fruit juice samples oflocalmarketsofLahoreandcomparethevaluesofthemwithstandard valuesrecommendedby WHO andevaluatethetoxiclevelofthem.Di-acid digestionmethodwasappliedtodetecttheheavy metalsandmineralsin commercially available fruit juices.After this,by usingatomicabsorption,spectrophotometerheavy metalswere determined.Finally,byusing statisticalanalysisANOVA SPSSSoftware wasconcludedthe results.Oneway ANOVAwasappliedinpresentstudy.
The presentresultsshowedthatthe concentrationofMn, Cr, Fe, Cu, Ni and Pb incommercial juice sampleswasfoundabovethepermissiblelimit in all the areas of Lahore.TheconcentrationofZinc inwasbelowthepermissiblelimit. So after the investigation it is concluded that commercial juices in Lahore is polluted. Availability: Items available for loan: UVAS Library [Call number: 2888-T] (1).
5.
Identification Of Heavy Metal Content In Different Local And Imported Brands Of Lipsticks
by Hafiza Mehak Fatima | Ms.Isbah Hameed | Dr.Saman Sana | Dr.zubair Farooq.
Material type: ; Literary form:
not fiction
Publisher: 2017Dissertation note: A cosmetic product is a substance which is used on various external parts of the human body in order to enhance its beauty. Basically these cosmetic products are used for the purpose of cleaning, protection, perfuming and beautifying the appearance etc. Cosmetics are the products which are designed for contemporary use such as deodorants, lipsticks, moisturizing lotions and other makeup products. These products are available in market in various forms. As these are used widely by human beings so, should be safe and healthy to use. Unfortunately many of these products do not comply with the rules of FDA, so many of these products contain carcinogenic ingredients as well as heavy metals such as lead, mercury, nickel, copper, cobalt and arsenic. Metals are basically contaminants present in a variety of cosmetic products, some of them like chromium and iron oxides are also used as colorants in these products. Serious health issues due to heavy metals include memory loss, mental retardation, skin cancer, retarded brain growth, depression, alzhimer, abnormalities in fetus development and infertility in males and females both.
The aim of this study is to find out the concentrations of different heavy metals such as nickel, chromium, zinc, iron, cadmium, mercury, copper, lead and selenium in 10 local local and 10 imported brands of lipsticks. All the samples were first digested by Diacid method and then the heavy metal detection of sample was done through Atomic Absorption Spectrophotometer. For every metal, local samples were find more contaminated than the imported ones. The highest value among all the samples for lead detected was 0.385 ppm which is less than the safe limit. 0.385ppm < 1.0 ppm. Similarly in case of cadmium the mean of highest detected values was 2.09 ppm.
SUMMARY
44
Other metals like copper, zinc, chromium, mercury, selenium, nickel and iron showed values 0.36 ppm, 2.25ppm, 0.48ppm, 2.09ppm, 3.06ppm, 0.58ppm and 3.385 ppm respectively. Local samples contain somehow metal concentrations more than the safe limits given by EPA. Exposure to abnormal amount of heavy metals causes severe health hazards to human beings as describes above. Availability: Items available for loan: UVAS Library [Call number: 2963-T] (1).
