Analisis Logam Timbal (Pb) Dan Besi (Fe) Dalam Air Laut Di Wilayah Pesisir Pelabuhan Ferry Taipa Kecamatan Palu Utara (the Analysis of Lead (Pb) and Iron (Fe) Metals in the Sea Water of Coastal Area of Taipa's Ferry Harbor Subdistrict of North Palu)

The analysis of lead (Pb) and iron (Fe) have been done in Taipa's sea water. The objective is to determine the level of lead and iron metals using spectrophtometry method. The sea water samples were taken in the morning and afternoon at three different places. The distance of 3 samples are approximately 5 m, 10 m, and 15 m from the harbour and about 5 m from the seashore. The result of the analysis level of lead and iron metals from 3 points for lead taken in the morning, point A is 0.919 mg/L, point B is 0.703 mg/L, and point C is 0.810 mg/L. While, taken in the afternoon, the lead level point A is 0.729 mg/L, point B is 0.837 mg/L, and point C is 0.729 mg/L. For the iron level taken in the morning, point A is 0.394 mg/L, point B is 0.546 mg/L, and point C is 0.324 mg/L. Meanwhile, in the afternoon the iron level, point A is 0.449 mg/L, point B is 0.365 mg/L, and point C is 0.504 mg/L. The concentration of lead metal in the sea water is in range 0.703 mg/L – 0.919 mg/L. The concentration is higher than limit ranges value of lead metal 0.025 mg/L. The concentration of iron metal in the sea water of Taipa's harbor is about 0.324 mg/L – 0.546 mg/L. It's concentration is higher than limit for value iron metal 0.01 mg/L

Analisis Logam Zink (Zn) dan Besi (Fe) Air Sumur di Kelurahan Pantoloan Kecamatan Palu Utara

A study is carried out to determine the metal content of zinc (Zn) and iron (Fe) in well water samples by AAS using a wet method of destruction through the addition of concentrated HNO3 as a solvent and forming acidic. The measuring the levels of zinc in the sample performed at a wavelength (λ) = 213 nm and measuring the levels of iron in the sample performed at a wavelength (λ) = 248.3 nm. The results obtained for the levels of zinc metal respectively are 0.3121 mg/L, 0.1175 mg/L, and 0.0478 mg/L, and iron metal levels are 0.394 mg/L, 0.546 mg/L, and 0.324 mg/L. These data indicate the metal content of zinc in wells water Pantoloan Village North Palu Palu district is still below the threshold value while the metal content of iron in wells near the sea (sampel B) is above the standard threshold value defined in the Rules of Ministry of Health Decree No. 492 /2010

Pemanfaatan Minyak Daun Cengkeh (Syzygium Aromatcum L.) Untuk Pengawetan Ikan

This study aimed to examine the effect of clove leaf oil on the preservation of skipjack tuna fish. This research was conducted with variations in concentration and duration of storage. Analysis of the number of microbes was determined using the Pour method (pour plate), the organoleptic analysis used a test of the level of preference for color, aroma, texture, and taste. Analysis of protein levels used a Uv- Vis spectrophotometer and analysis of fat content used the Soxletation method

Identification of Secondary Metabolites Compound on Seagrass Stems and Leaves in Palu Bay

This study aims to determine the content of secondary metabolites in the stems and leaves of seagrass (Seagrass) found in Palu Bay. The method used in this study is the screening method. The samples used were stems and leaves of seagrass species Enhalus acoroides, Thalasia hemprichii, and Sringodium isotifolium. The types of compounds identified in this study were alkaloids, flavonoids, steroids, triterpenoids, saponins, and tannins. Before the qualitative test on the sample, maceration was carried out for 24 hours with ethanol as a solvent. The results obtained were the type of seagrass Enhalus acoroides, the stems contain alkaloids, flavonoids, triterpenoids, and tannins, the leaves contain alkaloids, flavonoids, steroids, saponins, and tannins. Syringodium isoetifolium seagrass contains alkaloids, titerpenoids, saponins, and tannins, the leaves contain alkaloids, steroids, and tannins. Seagrass Thalasia hemprichii contains alkaloids, flavonoids, titerpenoids, and tannins, the leaves contain alkaloids, flavonoids, steroids, and tannins. Thalasia hemprichii and Sringodium isotifolium

Analysis of Sulfur Content in the Hot Springs at the Foot of the Mountain in Sedoa Village North Lore District Poso Regency

Research on the Sulfur Content Analysis in the Hot Springs at the Foot of the mountain in Sedoa Village, North Lore District, Poso Regency has been conducted. The purpose of this study was to determine the sulfur content in the hot springs at the foot of the mountain in Sedoa Village, North Lore District, Poso Regency. The method used is the Gravimetric method. Hot water samples were taken in the morning and allowed to stand for 3 hours, 1 day, 2 days, and 3 days with 3 different sampling points. Point A is hot water consumed by the community, points B and C are hot water used by the community for bathing and washing. The results showed that the sulfur content of sample A for 3 hours was 9 mg/L, sample B was 4.5 mh/L, sample C was 4.5 mg/L. For 1 day, sample A was 4.5 mg/L, sample B was 4.5 mg/L, sample C was 4.5 mg/L. For 2 days, sample A was 4.5 mg/L, sample B was 4.5 mg/L, sample C was 4.5 mg/L. For 3 days, sample A was 4.5 mg/L, sample B was 4.5 mg/L, sample C was 4.5 mg/L. Sulfur content in the hot springs in Sedoa Village ranges from 4.5 mg/L – 9 mg/L. This level is far below the standard sulfur content, which is <400 mg/L