TINGKAT PENCEMARAN LOGAM KADMIUM (Cd) DAN KOBALT (Co) PADA SEDIMEN DI SEKITAR PESISIR BANDAR LAMPUNG
Bibliographic record
Abstract
Telah dilakukan penelitian tentang tingkat pencemaran logam kadmium (Cd) dan kobalt (Co) pada sedimen disekitar pesisir Bandar Lampung. Konsentrasi logam kadmium dan kobalt di tentukan dengan menggunakan spektrofotometer Serapan Atom (SSA) dengan menggunakan tiga validasi metode yaitu linearitas, limit deteksi dan presisi. Hasil analisis menunjukan konsentrasi logam kadmium (Cd) berada pada rentang 7,413 ± 0,009 ppm hingga 7,221 ± 0,008 ppm, konsentrasi logam kadmium berada diatas ambang baku mutu yang ditetapkan oleh National Sediment Quality Survey USEPA dan The Ontario Ministry of The Environment. Konsentrasi logam kobalt (Co) berada pada rentang 298,346 ± 3,309 ppm hingga 258,639 ± 1,103 ppm, konsentrasi logam kobalt berada diatas ambang baku mutu yang ditetapkan oleh National Sediment Quality Survey USEPA dan The Ontario Ministry of The Environment. Validasi metode pada penentuan konsentrasi logam kadmium (Cd) dan kobalt (Co) dalam sedimen menunjukan nilai koefisien korelasi pada masing- masing logam yaitu 99,8 % dan 99,9 %; limit deteksi pada masing-masing logam 0,000175 ppm dan 8,155787 ppm; presisi dengan nilai RSD <11 % dan <5%. \n \nKata kunci : Logam Berat, Cd, Co, Sedimen, Pesisir Bandar Lampung \n \n \nABSTRAK BAHASA INGGRIS \n \nThe Research have been conducted by the level of cadmium (Cd) and cobalt (Co) metal pollution in sediments from the coastal of Bandar Lampung. Cadmium (Cd) and cobalt (Co) metal consentration had determined using Atomic Absoption Spectrophotometer (AAS) with three validation methods, there linearity, limit of detection and precicion. The result of the analysis showed cadmium (Cd) metals consentration were in the range 7,413 ± 0,009 ppm to 7,221 ± 0,008 ppm, the concentration of the metal cadmium metal is above the quality standar of the National Sediment Quality Survey USEPA and The Ontario Ministry of The Environment. Cobalt (Co) metal consentration were in the range 298,346 ± 3,309 to 258,639 ± 1,103 ppm, the consentration of cobalt metal is above quality standar by the National Sediment Quality Survey USEPA and The Ontario Ministry of The Environment. Validation of methods in determining the consentration of cadmium (Cd) and cobalt (Co) metals in sediments showed a correlation coefficient for each metal that is 99,8 % and 99,9 %; limit of detection for each metal 0,000175 ppm and 8,155787 ppm; with RSD values of precision <11% and <5% \n \n \n \nKeyword : Heavy Metal, Cd, Co, Sediment, Coast Bandar Lampung \n
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.001 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.001 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.002 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.025 | 0.004 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".