Liposomes are lipid-bilayer vesicles that spontaneously self-assemble from fatty acids (or other amphiphiles) in water by encapsulating surrounding aqueous media. After British scientist Alec Bangham described this phenomenon in the early 1960s, they became a prominent participant in the hypotheses on life origin, particularly in the Lipid World model. A novel scenario of self-sustained Darwinian liposome evolution is based on ever-present natural phenomena of cyclic day/night solar UV radiation and gravitational submersion of liposomes in the Archean aqueous media. One of the assumptions of the hypothesis is the UV-shielding ability of the Archean waters that could protect the submerged liposomes from the damaging solar UV radiation. To corroborate the idea, we measured UV absorption in aquatic solutions of several ferrous mineral salts assumed to be present in Archean pools. Single-agent solutions of simple salts such as FeCl2-iron dichloride, FeCl3-iron trichoride, Fe(NO3)3-ferric nitride, NH4Fe(SO4)2-ferric ammonium sulfate, and (NH4)5[Fe(C6H4O7)2]-ferric ammonium citrate were tested. These direct measurements of UV light absorption supplement and reinforce the proposed hypothesis.

中文翻译：

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益生元矿物盐的水生亚铁溶液作为强紫外线防护剂和可能的生命起源位点。

脂质体是脂质双层囊泡，通过封装周围的水介质，由水中的脂肪酸（或其他两亲物）自发地自组装。英国科学家 Alec Bangham 在 20 世纪 60 年代初描述了这一现象后，他们成为生命起源假说，特别是脂质世界模型的重要参与者。自我维持的达尔文脂质体进化的新场景是基于始终存在的昼/夜循环太阳紫外线辐射和脂质体在太古宙水介质中的重力浸没的自然现象。该假说的假设之一是太古代水域的紫外线屏蔽能力，可以保护水下的脂质体免受破坏性的太阳紫外线辐射。为了证实这个想法，我们测量了假定存在于太古宙水池中的几种亚铁矿物盐的水溶液中的紫外线吸收。FeCl2-二氯化铁、FeCl3-三氯化铁、Fe(NO3)3-氮化铁、NH4Fe(SO4)2-硫酸铁铵、(NH4)5[Fe(C6H4O7)2]等简单盐的单剂溶液-测试了柠檬酸铁铵。这些紫外线吸收的直接测量补充并强化了所提出的假设。