Emisi kendaraan bermotor mengandung logam berat salah satunya adalah timbal (Pb). Pedagang kaki lima termasuk ke dalam kelompok masyarakat berisiko tinggi terhadap paparan emisi kendaraan bermotor. Penelitian ini bertujuan untuk menganalisis dan mengkaji kadar timbal dalam darah pedagang kaki lima. Rancangan penelitian yang digunakan adalah cross sectional dengan metode pengumpulan data melalui observasi, wawancara dan kuesioner. Pengukuran timbal menggunakan metode Spektrofotometer Serapan Atom (SSA). Sampel ditentukan dengan metode purposive sampling sebanyak 30 pedagang kaki lima. Hasil penelitian menunjukkan bahwa 18 responden (60%)  memiliki kadar timbal dalam darah melebihi kadar normal  yaitu <10 μg/dl. Rata-rata kadar timbal dalam darah  pada pedagang kaki lima sebesar 22,03 μg/dL. Kadar timbal dalam darah tertinggi pada responden sebesar 65 μg/dl dengan waktu kerja harian tertinggi selama 16 jam/hari. Karakteristik responden yang memiliki pengaruh terhadap kadar timbal (Pb) dalam darah adalah usia dan waktu kerja harian.

Mie Aceh is the noodle that formulated with special spices and raw materials wet noodle. Mie Aceh greatly favored by the Aceh's peoples. This research is conducted by using analysis of titrimetri, photometri and qualitative. The issue of using ash water, borax and formaldehyde of Mie Aceh which circulate at X's City in Aceh province been examined. After interview with 10 respondents noodle manufacture in X's City, there were three factors were identified that make them use "air abu" and formaldehyde. The three factors were economics factor, knowledge factor and the dough needs factor. Laboratory analysis was done to see the content of ash water, borax and formaldehyde in Mie Aceh. Theresults of the 25 samples (100%) containing ash water with sodium carbonate test indicators ranges from 0.22% b/b-0.27 %b/b, borax test results of 25 samples of noodles (100%) showed a negative result. Formalin test on 25 samples showed that positive test results (100%) of formaldehyde content of each sample was >4 mg/L. The results show that Mie Aceh circulating in X's City was less safe for consumption and dangerous for public health.