Whitening cream is a mixture of chemicals or other materials that serve to lighten skin or fade black spots on the skin. Bleaching creams that contain mercury is very harmful for health. The purpose of this study is to examine and establish the levels of mercury in the blood of women users of whitening creams in the city of Padang. Blood samples examined as many as 10 samples and whitening creams as much as 5 samples. The qualitative analysis of the bleaching creams done with color test method, while the quantitative analysis of the blood samples used method ICP (Inductively Coupled Plasma). The results showed that of the five samples examined bleaching creams with color test, there are three positive samples contain mercury. while the results showed that the ten blood samples studied one sample contained mercury levels in the blood exceeds the normal value is 0.04435 mg / L. The use of whitening creams containing mercury can cause a variety of health complaints, ranging from skin discoloration, which in turn can cause black spots on the skin, allergies, skin irritation as well as the use of high doses can cause permanent brain damage, and can cause cancer.

Development in the field of health is the achievement of an optimal public health degree. Among people who are often exposed to air pollution such as lead metal (Pb) is a gas station officer. One of the objectives of this research is to figure out the differences of lead level (Pb) in the hair of SPBU workers who base on Jl. Ir. Juanda based on length of service period by using experimental research to analyze Pb metal at gas station workers. The population and sample of research is hair of three gas station workers that contains metal of lead (Pb). The results of this study revealed that the longer employment period of workers, the higher the Pb level in their hair and the percentage recovery value for the wet destruction method using HNO3 and HCLO4 has an average recovery of 96.23% which is the precision test value of 4.01%. It is recommended that the validation test then use another method of dry destruction and examine the identity of age, place of birth date and lifestyle.

Makanan pangan jajanan anak sekolah (PJAS) di Indonesia diketahui mengalami penurunan kualitas, hal ini ditunjukkan dengan banyaknya angka kejadian keracunan di Sumatera Barat yang dilaporkan kepada Dinas Kesehatan.Pada tahun 2017 sebanyak 6 kasus keracunan dengan jumlah korban sebanyak 404 orang.Salah satu penyebabnya adalah kontaminasi pada makanan jajanan. Adanya kontaminasi pada makanan jajanan dapat menyebabkan foodborne disease.Penyebab kontaminasi pada makanan adalah cemaran mikroba, cemaran mikroba merupakan penyebab utama tidak terpenuhinya syarat pada pangan jajanan anak sekolah (PJAS) di Indonesia salah satunya disebabkan oleh Escherichia colli.Penelitianini bertujuan untuk mengetahui adanya cemaran bakteri, jumlah bakteri, dan identifikasi bakteri Escherichia collipada jajanan bakso tusuk.Sampel diambil dari 5 Sekolah Dasar di Kecamatan Gunung Talang.MetodePerhitungan dengan metode Uji Total Plate Count (TPC), isolasi pada media, dan uji biokimia. Dapat disimpulkan bahwa pada sampel 1 memiliki hasil rata-rata jumlah bakteri tertinggi dibandingkan dengan sampel lain, yaitu 1,5 x 105CFU/gram, dan hasil terendah terdapat pada sampel 5 sebesar 2,3 x 103 CFU/gram.Hasil penelitian inimenunjukkan hasil bahwa 1dari 5 sampel bakso tusuk telah melebihi ambang batas, sementara 4 lainnya masih diperbolehkan dikonsumsi.

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