Trust is of great importance in modern society, but few studies look at it from a linguistic perspective. This paper explores the discourses of trust based on the data from the BLCU Chinese Corpus (BCC). This paper finds that the communicator’s inner states of trust, suspicion, or distrust could be revealed through various metalanguage labels. This paper also indicates several trustworthiness cues that would help determine whom to trust, including (i) the speaker’s credibility, image, and identity, (ii) the relation between speaker and hearer, and (iii) the information being addressed. Further quantitative analysis demonstrates that credibility plays a vital role in trust building, diminishing, or breaking. Besides, the communicators’ image or relation contributes to their trust-building, but there will be suspicion or distrust if their identity is not as expected. This paper will contribute to the theoretical understanding of trust from a linguistic perspective and an account of how people maintain trust in interpersonal communication.

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Photoreduction of Hg (II) is of great importance but remains not fully understood especially in the presence of SO42-. In this study, laboratory experiments were conducted to investigate the reduction of Hg (Cl)2with various SO42-concentrations under artificial solar radiation. The whole process was tracked by changing Hg (0) concentrations in argon; the rate constants were calculated by trial method and were compared with other experiment. The results show the reaction rate decreased with increasing SO42-concentrations (0-20 mg L-1) and the cause of inhibitory effect is assumed with two explanations. The concentration of Hg (0) in argon increased firstly and decreased later in each treatment, since the main reactions in rising and dropping period are different. The comparison indicates that reduction rate is influenced by combined factors such as the form of mercury, the quantity of DOM and TSSs, depth of water and quality of light source.

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