Talbot C, Preston T, East B W
Comp Biochem Physiol A Comp Physiol. 1986;85(3):445-50. doi: 10.1016/0300-9629(86)90427-5.
This paper describes the measurement of whole body Ca, Cl, K, N, Na, O and P in Atlantic salmon parr, adults and kelts by neutron activation analysis (NAA). This technique is based on counting the specific gamma activity in samples which is present naturally or is produced by neutron irradiation. Body composition (fat, mineral, protein and water) are estimated from these data. NAA has advantages over chemical methods with the potential for in vivo measurements. Anthropogenic 137Cs was found in sea-water (SW) salmon but not found in the freshwater (FW) stages (parr and kelts). Presence of this isotope in fish caught in FW indicates recent SW residence.
本文描述了通过中子活化分析（NAA）对大西洋鲑幼鱼、成鱼和产后亲鱼的全身钙、氯、钾、氮、钠、氧和磷进行的测量。该技术基于对样品中自然存在或由中子辐照产生的特定伽马活性进行计数。根据这些数据估算身体组成（脂肪、矿物质、蛋白质和水）。与化学方法相比，NAA具有可进行体内测量的优势。在海水（SW）鲑鱼中发现了人为来源的铯-137，但在淡水（FW）阶段（幼鱼和产后亲鱼）未发现。在淡水捕获的鱼中存在这种同位素表明其近期曾栖息于海水环境。
