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"Five sediment cores from the fresh water region of the vembanad wetland system were studied for the trace element contents the average concentration of iron ,manganese, nickel, copper, zinc,cadmium,lead, mercury and chromium were determined...."

"Pesisir selatan Kabupaten Pacitan merupakan salah satu wilayah yang berbatasan langsung dengan Samudera Hindia dan memiliki sebuah teluk bernama Teluk Pacitan. Proses erosi dan sedimentasi perlu diketahui untuk melihat kondisi fisik pantai. Ukuran dan diameter butir sedimen merupakan bagian dari sifat-sifat sedimen yang dapat memberikan informasi tentang proses transport sedimen. Distribusi sedimen memberikan gambaran mengenai asal sedimen, sejarah transportasi, dan kondisi pengendapannya. Penelitian ini bertujuan untuk menganalisis lingkungan sedimentasi dan menganalisis variabel yang paling berpengaruh terhadap diameter butir sedimen. Metode pengambilan sampel daerah acak berstrata pada setiap segmen sepanjang 150x150 meter untuk pengumpulan sampel sedimen dan data kemiringan gisik pantai. Pengelompokkan sedimen dari hasil pengayakan yang dilakukan di laboratorium P2O LIPI berdasarkan skala Wentworth dan dilakukan uji granulometri. Arus pantai dan energi geombang diperoleh dari sumber data BMKG Ocean Forecast System. Hasil penelitian menunjukkan bahwa sedimen dengan jenis pasir mendominasi di semua pantai. Nilai mean pada pantai hadapan samudera berkisar antara -0.18 ndash; 2.43, sorting adalah well sorted hingga poorly sorted, skewness adalah very fine skewed hingga very coarse skewed, dan kurtosis adalah very leptokurtic dan extremely leptokurtic. Pantai hadapan teluk, nilai mean 2.20 ndash; 4.49 dari sisi barat hingga timur, sorting adalah very well sorted hingga moderately sorted, skewness adalah very fine skewed hingga coarse skewed, dan kurtosis adalah very leptokurtic dan extremely leptokurtic. Hasil uji statistik dengan Analisis Regresi Linier Berganda diperoleh hasil arus pantai, energi gelombang, dan keimiringan gisik pantai berpengaruh secara simultan terhadap diameter butir sedimen.

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The southern coast of Pacitan regency is one of the areas directly adjacent to the Indian Ocean and has a bay called Pacitan Bay. The process of erosion and sedimentation should be known to see the physical condition of the beach. The size and diameter of the sediment grains are part of the sedimentary properties that can provide information about the sediment transport process. Sediment distribution provides an overview of the origin of sediments, transportation history, and deposition conditions. This study aims to analyze the sedimentation environment and analyze the variables that have the most influence on the diameter of the sediment grains. Methods of sampling stratified random areas on each segment along 150x150 meters for collection of sediment samples and slope data of coastal gradients. The grouping of sediments from the sieving result conducted in LIPI P2O laboratory based on Wentworth scale and granulometry test. Coastal currents and wave energy are obtained from BMKG Ocean Forecast System data source. The results showed that sediment with sand types dominates on all beaches. Mean values on oceanfront beaches range from 0.18 2.43, sorting is well sorted to poorly sorted, skewness is very fine skewed to very coarse skewed, and kurtosis is very leptokurtic and extremely leptokurtic. Beachfront bay, mean value 2.20 4.49 from west to east side, sorting is very well sorted to moderately sorted, skewness is very fine skewed to coarse skewed, and kurtosis is very leptokurtic and extremely leptokurtic. The result of statistical test with Multiple Linear Regression Analysis showed that coastal currents, wave energy, and the slope of the coastal gradient influence simultaneously to the diameter of the sediment grains."

"Peningkatan pemakaian logam berat dalam keperluan sehari-hari meningkatkan juga pencemaran logam berat tersebut ke sehingga menjadi sangat penting mengidentifikasi potensi pencemaran dalam kolom air. Sedimen dasar sebagai stok historikal pencemar logam berat juga perlu diteliti risiko pencemarannya terhadap kolom air. Selain meneliti kandungan total perlu dilakukan spesiasi untuk menggambarkan potensi pencemaran yaitu mobilitas dan bioavaliabilitasnya pada kolom air dan sedimen dasar.Kegiatan sampling telah dilakukan di Danau Mahoni UI untuk kondisi musim hujan dan musim kering pada empat site dengan tiga kedalaman pada masing-masing site. Adapun logam berat yang di teliti adalah Cd, Cu, Pb, dan Zn. Dari penelitian ini dapat ditarik kesimpulan bahwa bila dibandingkan dengan PP 82 tahun 2001, kandungan total logam berat pada Danau UI masih memenuhi baku mutu, sementara untuk potensi pencemaran (mobilitas dan bioavailibilitas) logam beratnya juga masih dalam kategori aman, dimana fraksi dissolved dan fraksi acid extractable berada dibawah 1% dari total logam berat. Keberadaan sedimen sebagai stok pencemar logam berat juga masih dalam kategori aman yang disimpulkan dari mobility factor yang <1% untuk setiap unsur. Sehingga dapat disimpulkan berdasarkan spesisasi yang dilakukan, kolom air dan sedimen dasar Danau Mahoni UI dalam kategori aman.

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Anthropogenic use of heavy metal as raw material is increasing causing persistence and accumulation in the environment which will further cause higher exposure to living species. Sediment as a historical stock and accumulation site of heavy metal is important to be assessed due to its risk to enter and contaminate the water column. When assessing heavy metal risk to living beings, it is also necessary to assess the speciation of heavy metal in addition to total concentration to obtain a more comprehensive understanding. This research aimed to identify the contamination potential by specifying the fraction of heavy metal in water column and sediment.

Sample was taken from Danau Mahoni UI in rainy and dry season in four sites with three depth point for each site. The elements assessed includes Cd, Cu, Pb, and Zn. This research finally concluded that the water of Danau Mahoni UI is in low risk and can be used as water source according to the standard of Government Regulation number 82 (2001) as the dissolved and acid extractable fraction with high mobility and bioavailability is less than 1% by its total content. The mobility factor of sediment that is less than 1% shows that the sediment is in low risk to recontaminate the water columns."

"Heavy metals in suspended sediments (SS) were investigated in the lower Chao Phraya River,Thailand, and Main particulate metals. The particulate fractions accounted mostly for 60-100% of total concentrations of Cr, Mn, Ni, Cu, Zn, and Pb in both dry and rainy seasons. The comparison of metal contents of the sampled SS and upper continental crust (UCC) implied some anthropogenic inputs of Cr, Ni,Cu, and Zn as well as the dilution process for those metals in the rainy season in Chao Phraya River. Enrichment factor in both rivers also indicated anthropogenic effects on metal content in SS,reflecting the distinctive seasonal process in Chao Phraya River and the spatial variation withinMaxil."

"Logam Berat merupakan jenis pencemar di perairan yang berkaitan erat dengan Total Padatan Tersuspensi (TSS). Eratnya hubungan dari kedua parameter tersebut dapat menjadi potensi dalam menilai secara tidak langsung logam berat di perairan. Penelitian ini bertujuan untuk mengetahui hubungan antara TSS dan berat Nikel (Ni) dan Tembaga (Cu) yang terikat didalamnya, kemudian distribusi TSS di perairan diestimasi menggunakan teknik penginderaan jauh untuk menggambarkan secara tidak langsung distribusi kedua logam berat tersebut, dan mengetahui pengaruh dari parameter perairan terhadap distribusi kandungan TSS dan logam berat. Penelitian ini dimulai dengan pengambilan sampel yang dilakukan pada 31 Maret – 1 April 2023 di 36 titik sampling yang telah ditentukan. Sampel air dianalisis kandungan TSS-nya menggunakan metode gravimetri serta kandungan logam berat Ni dan Cu yang terikat dalam TSS tersebut dianalisis menggunakan metode Inductively Coupled Plasma - Optical Emission Spectrometry (ICP-OES). Parameter perairan yang mencakup kedalaman, arus, gelombang, pasang surut, suhu, pH dan salinitas diukur dan dianalisis untuk mengetahui pengaruhnya terhadap kandungan dan pola sebaran TSS maupun logam berat di perairan. Hasil penelitian menunjukkan bahwa kandungan TSS berkisar antara 6 hingga 45 mg/l, dimana kandungan tertinggi ditemukan di sekitar daerah pertambangan di Desa Tapuemea dan muara Sungai Lasolo. Kandungan logam berat Ni dan Cu masing masing berkisar antara 0,03 – 0,1 mg/kg dan 0,006 – 0,5 mg/kg. Secara spasial, kedua logam tersebut sama-sama ditemukan tertinggi pada perairan yang jauh dari area pertambangan yaitu di pesisir Kelurahan Molawe. Pola sebaran spasial parameter TSS dan logam berat yang tidak menunjukkan korelasi mengindikasikan bahwa sebaran TSS tidak dapat menggambarkan secara tidak langsung langsung pola sebaran logam berat di Teluk Lasolo. Berdasarkan hasil analisis statistik, distribusi TSS dipengaruhi oleh pH air, logam berat Ni dipengaruhi oleh arus dan Cu tidak dipengaruhi oleh seluruh parameter. Hasil pemodelan spasial menunjukkan dugaan bahwa gelombang dan pasang surut memiliki pengaruh dalam distribusi TSS dan logam berat.

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Heavy metals are a type of pollutant in water closely related to Total Suspended Solids (TSS). The close relationship between these two parameters can be a potential indirect assessment of heavy metals in water. This research aims to determine the relationship between TSS and the weight of Nickel (Ni) and Copper (Cu) bound within it. Additionally, the distribution of TSS in water is estimated using remote sensing techniques to indirectly depict the distribution of these heavy metals. The study also aims to identify the influence of water parameters on the distribution of TSS and heavy metals. The research began with sampling on 31 March – 1 April 2023, at 36 predetermined sampling points. Water samples were analyzed for TSS content using gravimetric methods, and the content of Ni and Cu bound in TSS was analyzed using Inductively Coupled Plasma - Optical Emission Spectrometry (ICP-OES). Water parameters, including depth, current, waves, tides, temperature, pH, and salinity, were measured and analyzed to determine their influence on the content and distribution patterns of TSS and heavy metals in water. The results showed that TSS content ranged from 6 to 45 mg/l, with the highest content found around mining areas such as jetty in Tapuemea Village and the mouth of the Lasolo River. The content of heavy metals Ni and Cu ranged from 0.03 to 0.1 mg/kg and 0.006 to 0.5 mg/kg, respectively. Spatially, both metals were found highest in waters far from mining areas, specifically in the coastal area of Molawe Village. The spatial distribution pattern of TSS and heavy metals, which did not show correlation, indicates that the TSS distribution cannot directly depict the spatial distribution pattern of heavy metals in Teluk Lasolo. Based on statistical analysis, TSS distribution is influenced by water pH, Ni is influenced by currents, and Cu is not influenced by any parameter. Spatial modeling results suggest that waves and tides have an impact on the distribution of TSS and heavy metals."

""This volume offers a review of terrestrial geochemical sedimentology, integrate current research with earlier work. Understanding the origins of terrestrial geochemical sediments can provide insights into past environments, landform preservation and landscape erosion."--Jacket."

"Daerah penelitian terletak pada Pulau Seram merupakan salah satu wilayah yang memiliki potensi prospek komoditas emas dikarenakan ditemukannya indikasi mineralisasi emas. Hal ini juga dikorelasikan berdasarkan penelitian sebelumnya bahwa daerah penelitian merupakan endapan emas orogenik. Subjek utama penelitian ini adalah conto sedimen sungai aktif. Penelitian ini dilakukan menggunakan analisis statistik dan geologi. Analisis statistik dilakukan untuk mengetahui sebaran anomali dan juga asosiasi unsur yang terdapat pada daerah penelitian. Sedangkan untuk analisis geologi dilakukan dengan mengintegrasi conto sedimen sungai aktif dan conto konsentrat dulang yang berasal dari PSDMBP dengan melakukan analisis petrografi, morfografi dan morfometri  Hasil penelitian menunjukkan persebaran anomali yaitu Cu, Pb, Zn, Fe, Mn, Li, Co, Na, Bi, Sr dan Ba sebesar 44.255ppm, log 1.900ppm, 148.605ppm, 4.734ppm, log 3.189ppm, 27.302ppm, 41.374%, 7609.713ppm, 53.807ppm, log 1.480ppm, log 1.592ppm, 184.198ppm, log 1.924ppm dan 263.139ppm. Berdasarkan analisis multivariat, didapatkan 4 kelompok asosiasi unsur yaitu : Cu-Zn-Rb-Ba-(Fe), Cu-Co-Fe, Na-Sr dan Fe-Mn. Unsur yang digunakan sebagai pathfinder untuk deposit emas adalah unsur Cu, Pb, Zn, Fe, Mn, Na, Bi, Co, W, Rb, Sr dan Ba sehingga terdapat 4 daerah prospek pada daerah penelitian. Persebaran anomali pada daerah penelitian diinterpretasikan terjadi akibat faktor geologi berupa transportasi, erosi, serta pelapukan dari litologi dan mineral bijih yang terdapat pada daerah penelitian.

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The research area, Seram Island, is one of the areas that has potential prospects for the commodity gold due to the indications of gold mineralization were found. This also correlated with based on previous research, the research area is an orogenic gold deposit. The main subject of this research is sediment stream samples. This research was conducted using statistic and geological analysis. Statistic analysis was carried out to determine the distribution of anomalies and also the elemental associations found in the study area. Meanwhile, geological analysis was carried out by integrating active river sediment samples and pan concentrate samples originating from PSDMBP by conducting petrographic, morphographic and morphometric analysis. The results showed an anomalous distribution of Cu, Pb, Zn, Fe, Mn, Li, Co, Na, Bi , Sr and Ba of 44.255ppm, log 1.900ppm, 148.605ppm, 4.734ppm, log 3.189ppm, 27.302ppm, 41.374%, 7609.713ppm, 53.807ppm, log 1.480ppm, log 1.592ppm, 184.198ppm, log 1.924ppm and 263.139ppm. Based on multivariate analysis, 4 groups of elemental associations were obtained, namely: Cu-Zn-Rb-Ba-(Fe), Cu-Co-Fe, Na-Sr and Fe-Mn. The elements used as pathfinder for gold deposit are the elements Cu, Pb, Zn, Fe, Mn, Na, Bi, Co, W, Rb, Sr and Ba ​​so that there are 4 prospect areas in the study area. The distribution of anomalies in the study area is interpreted to occur due to geological factors in the form of transportation, erosion, and weathering of lithology and ore minerals found in the study area."

"Perubahan dalam lingkungan oleh aktivitas manusia dapat berasosiasi dengan akumulasi logam berat dan berpotensi meninggalkan jejak antropogenik dalam rekaman sedimen laut. Penelitian akan kondisi kemostratigrafi dilakukan untuk menentukan pengaruh aktivitas antropogenik di Perairan Banggai, yang dinilai tinggi karena fungsinya sebagai wilayah penangkapan ikan dan berdekatan dengan Pulau Taliabu, kepulauan agrikultural dengan potensi tambang yang tinggi. Penelitian ini dilakukan dengan melakukan penanggalan umur (dating) dengan isotop 210Pb, analisis logam berat, distribusi ukuran butir, dan kandungan TOC untuk menganalisis dan merekonstruksi perubahan lingkungan. Penanggalan menggunakan isotop 210Pb dilakukan menggunakan spektrometer alfa (AAS), logam berat dianalisis menggunakan spektrometri emisi optikal (ICP-OES), distribusi ukuran butir dianalisis menggunakan difraksi laser (LDS), dan kandungan TOC dianalisis menggunakan LOI. Hasil analisis menunjukkan bahwa distribusi konsentrasi logam berat dalam sedimen core BC-06 menghasilkan nilai geo-accumulation index dan enrichment factor yang rendah, dan menunjukkan bahwa sumber logam berat yang ditemukan merupakan campuran alamiah dan antropogenik. Jejak logam berat dengan pengaruh antropogenik dalam sedimen core BC-06 dapat dibagi menjadi tiga periode, yaitu: (I) 1831-1927 AD, (II) 1927-1994 AD, dan (III) 1994-2022 AD, yang diinterpretasi berhubungan dengan ekspansi militer pada zaman pemerintahan Hindia-Belanda dan perkembangan berbagai sektor perekonomian Indonesia modern.

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Changes in the environment by human activities is associated with heavy metal accumulation and can potentially leave anthropogenic traces in marine sediment records. Research focusing on the chemostratigraphic condition was done to determine the impacts made by anthropogenic activities in Banggai Waters, that are considered high because of its function as fishing grounds and is located near Taliabu Islands, which are agricultural lands with high mining potential. This research was done by Pb-210 dating, heavy metal, grain size distribution, dan TOC content analyses, to analyse and reconstruct environmental changes. Pb-210 dating was conducted by alpha spectrometer (AAS), heavy metal analysis was conducted by optical emission spectrometry (ICP-OES), grain size distribution analysis was conducted by laser diffraction (LDS), and TOC content analysis was conducted by the LOI method. Results show that heavy metal concentration distribution in sediment core BC-06 yield low values for geo-accumulation index (Igeo) and enrichment factor (EF), and showed that the metals found has a mixed source of natural and anthropogenic. Heavy metal traces with anthropogenic influence can be divided into three periods, such as: (I) 1831-1927 AD, (II) 1927-1994 AD, dan (III) 1994-2022 AD, which are interpreted as related to the military expansion during The Dutch’s colonialism, alongside the development of various economic sectors in modern Indonesia."

"Sediment toxicity test are becoming increasingly important in regulation and assessment programs throughout the world. Sediment toxicity testing using planktonic diatom, chaetoceros gracilis has been developed to determine the suitability of the diatom as sediment test organism...."