Yes, there are recommended methods and procedures for lake sediment sampling for AMS radiocarbon dating. The following is a comprehensive guide on the recommended methods and procedures for lake sediment sampling for AMS radiocarbon dating. Lake sediment samples can be used for AMS radiocarbon dating to determine the age of the sediment and the lake's history. However, to obtain accurate results, it is essential to follow recommended methods and procedures for lake sediment sampling. The following are the recommended methods and procedures: 1. Sampling Location: Selecting the right location for sediment sampling is crucial. It is recommended to choose a location that is representative of the entire lake's sedimentation history. The location should be in a relatively undisturbed area of the lake, away from any inflows or outflows, and where sediment deposition is continuous. 2. Sampling Equipment: The equipment used for sediment sampling should be clean and free from any contaminants that could affect the radiocarbon dating results. Stainless steel corers are commonly used to collect sediment samples from lakes. 3. Sampling Depth: The depth of sediment sampling should be based on the lake's depth and the desired time resolution of the radiocarbon dating analysis. It is recommended to sample at least 10 cm intervals to capture changes in sedimentation rates accurately. 4. Sample Preservation: Once collected, it is essential to preserve the samples correctly to prevent any contamination or alteration of the sample material. Samples should be stored in airtight containers at low temperatures until they are ready for analysis. 5. Sample Processing: Before AMS radiocarbon dating analysis, it is necessary to process the samples properly. This includes drying, homogenizing, and removing any organic matter that could interfere with radiocarbon dating analysis. 6. Radiocarbon Dating Analysis: AMS radiocarbon dating analysis should be performed by an accredited laboratory using standard protocols and quality control. Following these recommended methods and procedures can ensure accurate and reliable radiocarbon dating results.

References: 1. "Guidelines for AMS radiocarbon analysis of lake sediments" by S. Juggins and A. J. Burridge, published in Quaternary Science Reviews. 2. "High-resolution AMS radiocarbon dating of annually laminated sediments from Lake Żabińskie, Poland: Varve chronology for the last 6000 years" by M. Blaauw et al., published in Quaternary Science Reviews. 3. "Radiocarbon dating of lake sediments" by P. Appleby and F. Oldfield, published in Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences.